Get a list of all receptor proteins in GPCRdb (source: SWISSPROT)

/receptorlist/

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[
    {
        "entry_name": "5ht1a_human",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "P08908",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht1b_human",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P28222",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "tryptamine"
            },
            {
                "name": "5-HT-moduline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht1d_human",
        "name": "5-HT<sub>1D</sub> receptor",
        "accession": "P28221",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1D</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "5-HT-moduline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht1e_human",
        "name": "5-HT<sub>1E</sub> receptor",
        "accession": "P28566",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1E</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "tryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht1f_human",
        "name": "5-HT<sub>1F</sub> receptor",
        "accession": "P30939",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1F</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht2a_human",
        "name": "5-HT<sub>2A</sub> receptor",
        "accession": "P28223",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "tryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht2b_human",
        "name": "5-HT<sub>2B</sub> receptor",
        "accession": "P41595",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht2c_human",
        "name": "5-HT<sub>2C</sub> receptor",
        "accession": "P28335",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2C</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht4r_human",
        "name": "5-HT<sub>4</sub> receptor",
        "accession": "Q13639",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht5a_human",
        "name": "5-HT<sub>5A</sub> receptor",
        "accession": "P47898",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>5A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht6r_human",
        "name": "5-HT<sub>6</sub> receptor",
        "accession": "P50406",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>6</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "5ht7r_human",
        "name": "5-HT<sub>7</sub> receptor",
        "accession": "P34969",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>7</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "acm1_human",
        "name": "M<sub>1</sub> receptor",
        "accession": "P11229",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "acetylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "acm2_human",
        "name": "M<sub>2</sub> receptor",
        "accession": "P08172",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "acetylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "drd2_human",
        "name": "D<sub>2</sub> receptor",
        "accession": "P14416",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "dopamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "acm3_human",
        "name": "M<sub>3</sub> receptor",
        "accession": "P20309",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "acetylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "acm4_human",
        "name": "M<sub>4</sub> receptor",
        "accession": "P08173",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "acetylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "acm5_human",
        "name": "M<sub>5</sub> receptor",
        "accession": "P08912",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "acetylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ada1a_human",
        "name": "&alpha;<sub>1A</sub>-adrenoceptor",
        "accession": "P35348",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1A</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ada1b_human",
        "name": "&alpha;<sub>1B</sub>-adrenoceptor",
        "accession": "P35368",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1B</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ada1d_human",
        "name": "&alpha;<sub>1D</sub>-adrenoceptor",
        "accession": "P25100",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1D</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ada2a_human",
        "name": "&alpha;<sub>2A</sub>-adrenoceptor",
        "accession": "P08913",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2A</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ada2b_human",
        "name": "&alpha;<sub>2B</sub>-adrenoceptor",
        "accession": "P18089",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2B</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ada2c_human",
        "name": "&alpha;<sub>2C</sub>-adrenoceptor",
        "accession": "P18825",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2C</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "adrb1_human",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "P08588",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "noradrenaline"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "adrb2_human",
        "name": "&beta;<sub>2</sub>-adrenoceptor",
        "accession": "P07550",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>2</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "noradrenaline"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "Zn<sup>2+</sup>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "adrb3_human",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "P13945",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(&plusmn;)-adrenaline"
            },
            {
                "name": "(+)-adrenaline"
            },
            {
                "name": "(+)-adrenaline"
            },
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-adrenaline"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "drd1_human",
        "name": "D<sub>1</sub> receptor",
        "accession": "P21728",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "noradrenaline"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "dopamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "drd3_human",
        "name": "D<sub>3</sub> receptor",
        "accession": "P35462",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "dopamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "drd4_human",
        "name": "D<sub>4</sub> receptor",
        "accession": "P21917",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "dopamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "drd5_human",
        "name": "D<sub>5</sub> receptor",
        "accession": "P21918",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "noradrenaline"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "L-NOREPINEPHRINE"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "dopamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hrh1_human",
        "name": "H<sub>1</sub> receptor",
        "accession": "P35367",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hrh2_human",
        "name": "H<sub>2</sub> receptor",
        "accession": "P25021",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hrh3_human",
        "name": "H<sub>3</sub> receptor",
        "accession": "Q9Y5N1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hrh4_human",
        "name": "H<sub>4</sub> receptor",
        "accession": "Q9H3N8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            },
            {
                "name": "CCL16"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taar1_human",
        "name": "TA<sub>1</sub> receptor",
        "accession": "Q96RJ0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Trace amine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "TA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "dopamine"
            },
            {
                "name": "&beta;-phenylethylamine"
            },
            {
                "name": "&beta;-phenylethylamine"
            },
            {
                "name": "3-iodothyronamine"
            },
            {
                "name": "octopamine"
            },
            {
                "name": "(+)-Octopamine"
            },
            {
                "name": "CHEMBL1160703"
            },
            {
                "name": "CHEMBL1160703"
            },
            {
                "name": "tyramine"
            },
            {
                "name": "tyramine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agtr1_human",
        "name": "AT<sub>1</sub> receptor",
        "accession": "P30556",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin IV"
            },
            {
                "name": "angiotensin A"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agtr2_human",
        "name": "AT<sub>2</sub> receptor",
        "accession": "P50052",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin-(1-7)"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin III"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            },
            {
                "name": "angiotensin II"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "apj_human",
        "name": "apelin receptor",
        "accession": "P35414",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Apelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "apelin receptor",
        "endogenous_ligands": [
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "[Pyr<sup>1</sup>]apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-13"
            },
            {
                "name": "apelin-36"
            },
            {
                "name": "apelin-36"
            },
            {
                "name": "apelin-36"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin-17"
            },
            {
                "name": "apelin receptor early endogenous ligand"
            },
            {
                "name": "apelin receptor early endogenous ligand"
            },
            {
                "name": "Elabela/Toddler-32"
            },
            {
                "name": "Elabela/Toddler-21"
            },
            {
                "name": "Elabela/Toddler-11"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "nmbr_human",
        "name": "BB<sub>1</sub> receptor",
        "accession": "P28336",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "gastrin-releasing peptide"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "gastrin-releasing peptide"
            },
            {
                "name": "gastrin-releasing peptide"
            },
            {
                "name": "gastrin-releasing peptide"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "gastrin releasing peptide(14-27) (human)"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grpr_human",
        "name": "BB<sub>2</sub> receptor",
        "accession": "P30550",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "gastrin-releasing peptide"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "GRP-(18-27)"
            },
            {
                "name": "gastrin releasing peptide(14-27) (human)"
            },
            {
                "name": "neuromedin C"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "brs3_human",
        "name": "BB<sub>3</sub> receptor",
        "accession": "P32247",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "bkrb1_human",
        "name": "B<sub>1</sub> receptor",
        "accession": "P46663",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "T-kinin"
            },
            {
                "name": "T-kinin"
            },
            {
                "name": "[des-Arg<sup>10</sup>]kallidin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "kallidin"
            },
            {
                "name": "[Hyp<sup>3</sup>]bradykinin"
            },
            {
                "name": "Lys-[Hyp<sup>3</sup>]-bradykinin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "bkrb2_human",
        "name": "B<sub>2</sub> receptor",
        "accession": "P30411",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "T-kinin"
            },
            {
                "name": "T-kinin"
            },
            {
                "name": "[des-Arg<sup>10</sup>]kallidin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "kallidin"
            },
            {
                "name": "[Hyp<sup>3</sup>]bradykinin"
            },
            {
                "name": "Lys-[Hyp<sup>3</sup>]-bradykinin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cckar_human",
        "name": "CCK<sub>1</sub> receptor",
        "accession": "P32238",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "CCK-33"
            },
            {
                "name": "CCK-4"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-33"
            },
            {
                "name": "CCK-33"
            },
            {
                "name": "CCK-58"
            },
            {
                "name": "gastrin-17"
            },
            {
                "name": "gastrin-17"
            },
            {
                "name": "gastrin-17"
            },
            {
                "name": "desulfated cholecystokinin-8"
            },
            {
                "name": "CCK-39"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gasr_human",
        "name": "CCK<sub>2</sub> receptor",
        "accession": "P32239",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "CCK-33"
            },
            {
                "name": "CCK-4"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-8"
            },
            {
                "name": "CCK-33"
            },
            {
                "name": "CCK-33"
            },
            {
                "name": "CCK-58"
            },
            {
                "name": "desulfated gastrin-14"
            },
            {
                "name": "gastrin-17"
            },
            {
                "name": "gastrin-17"
            },
            {
                "name": "gastrin-17"
            },
            {
                "name": "gastrin-34"
            },
            {
                "name": "gastrin-71"
            },
            {
                "name": "desulfated cholecystokinin-8"
            },
            {
                "name": "desulfated gastrin-17"
            },
            {
                "name": "desulfated gastrin-34"
            },
            {
                "name": "desulfated gastrin-71"
            },
            {
                "name": "gastrin-14"
            },
            {
                "name": "CCK-39"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "c3ar_human",
        "name": "C3a receptor",
        "accession": "Q16581",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C3a receptor",
        "endogenous_ligands": [
            {
                "name": "C5a"
            },
            {
                "name": "C5a"
            },
            {
                "name": "C5a"
            },
            {
                "name": "C3a"
            },
            {
                "name": "C3a"
            },
            {
                "name": "C3a"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "c5ar1_human",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P21730",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "C5a"
            },
            {
                "name": "C5a des-Arg"
            },
            {
                "name": "C5a"
            },
            {
                "name": "C5a"
            },
            {
                "name": "C3a"
            },
            {
                "name": "C3a"
            },
            {
                "name": "C3a"
            },
            {
                "name": "ribosomal protein S19"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "c5ar2_human",
        "name": "C5a<sub>2</sub> receptor",
        "accession": "Q9P296",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "C5a"
            },
            {
                "name": "C5a des-Arg"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ednra_human",
        "name": "ET<sub>A</sub> receptor",
        "accession": "P25101",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-2"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-2"
            },
            {
                "name": "endothelin-2"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ednrb_human",
        "name": "ET<sub>B</sub> receptor",
        "accession": "P24530",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-1"
            },
            {
                "name": "endothelin-2"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-2"
            },
            {
                "name": "endothelin-2"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fpr1_human",
        "name": "FPR1",
        "accession": "P21462",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR1",
        "endogenous_ligands": [
            {
                "name": "fMet-Leu-Phe"
            },
            {
                "name": "spinorphin"
            },
            {
                "name": "annexin I"
            },
            {
                "name": "annexin I"
            },
            {
                "name": "annexin I"
            },
            {
                "name": "cathepsin G"
            },
            {
                "name": "cathepsin G"
            },
            {
                "name": "cathepsin G"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fpr2_human",
        "name": "FPR2/ALX",
        "accession": "P25090",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR2/ALX",
        "endogenous_ligands": [
            {
                "name": "fMet-Leu-Phe"
            },
            {
                "name": "annexin I"
            },
            {
                "name": "LXA<sub>4</sub>"
            },
            {
                "name": "LXA<sub>4</sub>"
            },
            {
                "name": "humanin"
            },
            {
                "name": "LTD<sub>4</sub>"
            },
            {
                "name": "LTC<sub>4</sub>"
            },
            {
                "name": "15-deoxy-LXA4"
            },
            {
                "name": "annexin I"
            },
            {
                "name": "annexin I"
            },
            {
                "name": "aspirin triggered lipoxin A4"
            },
            {
                "name": "aspirin triggered lipoxin A4"
            },
            {
                "name": "resolvin D1"
            },
            {
                "name": "resolvin D1"
            },
            {
                "name": "LL-37"
            },
            {
                "name": "aspirin-triggered resolvin D1"
            },
            {
                "name": "serum amyloid A"
            },
            {
                "name": "PrP<sub>106-126</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fpr3_human",
        "name": "FPR3",
        "accession": "P25089",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR3",
        "endogenous_ligands": [
            {
                "name": "annexin I-(2-26)"
            },
            {
                "name": "humanin"
            },
            {
                "name": "F2L"
            },
            {
                "name": "F2L"
            },
            {
                "name": "F2L"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "galr1_human",
        "name": "GAL<sub>1</sub> receptor",
        "accession": "P47211",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin-like peptide"
            },
            {
                "name": "galanin-like peptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "galr2_human",
        "name": "GAL<sub>2</sub> receptor",
        "accession": "O43603",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin-like peptide"
            },
            {
                "name": "galanin-like peptide"
            },
            {
                "name": "galanin-like peptide"
            },
            {
                "name": "spexin-1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "galr3_human",
        "name": "GAL<sub>3</sub> receptor",
        "accession": "O60755",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin"
            },
            {
                "name": "galanin"
            },
            {
                "name": "galanin-like peptide"
            },
            {
                "name": "galanin-like peptide"
            },
            {
                "name": "spexin-1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ghsr_human",
        "name": "ghrelin receptor",
        "accession": "Q92847",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Ghrelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ghrelin receptor",
        "endogenous_ligands": [
            {
                "name": "ghrelin"
            },
            {
                "name": "ghrelin"
            },
            {
                "name": "ghrelin"
            },
            {
                "name": "[des-Gln<sup>14</sup>]ghrelin"
            },
            {
                "name": "[des-Gln<sup>14</sup>]ghrelin"
            },
            {
                "name": "[des-Gln<sup>14</sup>]ghrelin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gnrhr_human",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "P30968",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "GnRH I"
            },
            {
                "name": "GnRH I"
            },
            {
                "name": "GnRH I"
            },
            {
                "name": "GnRH II"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "kissr_human",
        "name": "kisspeptin receptor",
        "accession": "Q969F8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Kisspeptin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "kisspeptin receptor",
        "endogenous_ligands": [
            {
                "name": "kisspeptin-10"
            },
            {
                "name": "kisspeptin-13"
            },
            {
                "name": "kisspeptin-14"
            },
            {
                "name": "kisspeptin-54"
            },
            {
                "name": "kisspeptin-52"
            },
            {
                "name": "kisspeptin-52"
            },
            {
                "name": "kisspeptin-10"
            },
            {
                "name": "kisspeptin-10"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mchr1_human",
        "name": "MCH<sub>1</sub> receptor",
        "accession": "Q99705",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanin-concentrating hormone",
        "ligand_type": "Peptide receptors",
        "subfamily": "MCH<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mchr2_human",
        "name": "MCH<sub>2</sub> receptor",
        "accession": "Q969V1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanin-concentrating hormone",
        "ligand_type": "Peptide receptors",
        "subfamily": "MCH<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            },
            {
                "name": "melanin-concentrating hormone"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mshr_human",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q01726",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "ACTH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "acthr_human",
        "name": "MC<sub>2</sub> receptor",
        "accession": "Q01718",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ACTH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "ACTH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mc3r_human",
        "name": "MC<sub>3</sub> receptor",
        "accession": "P41968",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "agouti-related protein"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "ACTH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mc4r_human",
        "name": "MC<sub>4</sub> receptor",
        "accession": "P32245",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "agouti-related protein"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "ACTH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mc5r_human",
        "name": "MC<sub>5</sub> receptor",
        "accession": "P33032",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "&alpha;-MSH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "ACTH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "&gamma;-MSH"
            },
            {
                "name": "agouti-related protein"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "&beta;-MSH"
            },
            {
                "name": "ACTH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mtlr_human",
        "name": "motilin receptor",
        "accession": "O43193",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Motilin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "motilin receptor",
        "endogenous_ligands": [
            {
                "name": "motilin"
            },
            {
                "name": "motilin"
            },
            {
                "name": "motilin"
            },
            {
                "name": "motilin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "nmur1_human",
        "name": "NMU1 receptor",
        "accession": "Q9HB89",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuromedin U receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NMU1 receptor",
        "endogenous_ligands": [
            {
                "name": "neuromedin S-33"
            },
            {
                "name": "neuromedin U-23"
            },
            {
                "name": "neuromedin U-25"
            },
            {
                "name": "neuromedin U-23"
            },
            {
                "name": "neuromedin S-36"
            },
            {
                "name": "neuromedin S-36"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "nmur2_human",
        "name": "NMU2 receptor",
        "accession": "Q9GZQ4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuromedin U receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NMU2 receptor",
        "endogenous_ligands": [
            {
                "name": "neuromedin S-33"
            },
            {
                "name": "neuromedin U-23"
            },
            {
                "name": "neuromedin U-25"
            },
            {
                "name": "neuromedin S-36"
            },
            {
                "name": "neuromedin S-36"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npff1_human",
        "name": "NPFF1 receptor",
        "accession": "Q9GZQ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide FF/neuropeptide AF receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPFF1 receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "PrRP-31"
            },
            {
                "name": "QRFP43 (43RFa)"
            },
            {
                "name": "neuropeptide AF"
            },
            {
                "name": "neuropeptide SF"
            },
            {
                "name": "RFRP-3"
            },
            {
                "name": "neuropeptide AF"
            },
            {
                "name": "neuropeptide AF"
            },
            {
                "name": "neuropeptide SF"
            },
            {
                "name": "neuropeptide SF"
            },
            {
                "name": "RFRP-1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npff2_human",
        "name": "NPFF2 receptor",
        "accession": "Q9Y5X5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide FF/neuropeptide AF receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPFF2 receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "neuropeptide FF"
            },
            {
                "name": "PrRP-31"
            },
            {
                "name": "QRFP43 (43RFa)"
            },
            {
                "name": "neuropeptide AF"
            },
            {
                "name": "neuropeptide SF"
            },
            {
                "name": "RFRP-3"
            },
            {
                "name": "neuropeptide AF"
            },
            {
                "name": "neuropeptide AF"
            },
            {
                "name": "RFRP-1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npsr1_human",
        "name": "NPS receptor",
        "accession": "Q6W5P4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide S receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPS receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide S"
            },
            {
                "name": "neuropeptide S"
            },
            {
                "name": "neuropeptide S"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npbw1_human",
        "name": "NPBW1 receptor",
        "accession": "P48145",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide W/neuropeptide B receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPBW1 receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide W-23"
            },
            {
                "name": "neuropeptide W-30"
            },
            {
                "name": "des-Br-neuropeptide B-23"
            },
            {
                "name": "des-Br-neuropeptide B-29"
            },
            {
                "name": "neuropeptide B-23"
            },
            {
                "name": "neuropeptide B-29"
            },
            {
                "name": "neuropeptide W-23"
            },
            {
                "name": "neuropeptide W-23"
            },
            {
                "name": "neuropeptide W-30"
            },
            {
                "name": "neuropeptide W-30"
            },
            {
                "name": "neuropeptide B-23"
            },
            {
                "name": "neuropeptide B-23"
            },
            {
                "name": "neuropeptide B-29"
            },
            {
                "name": "neuropeptide B-29"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npbw2_human",
        "name": "NPBW2 receptor",
        "accession": "P48146",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide W/neuropeptide B receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPBW2 receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide W-23"
            },
            {
                "name": "neuropeptide W-30"
            },
            {
                "name": "neuropeptide B-23"
            },
            {
                "name": "neuropeptide B-29"
            },
            {
                "name": "neuropeptide W-23"
            },
            {
                "name": "neuropeptide W-23"
            },
            {
                "name": "neuropeptide W-30"
            },
            {
                "name": "neuropeptide W-30"
            },
            {
                "name": "neuropeptide B-23"
            },
            {
                "name": "neuropeptide B-23"
            },
            {
                "name": "neuropeptide B-29"
            },
            {
                "name": "neuropeptide B-29"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npy1r_human",
        "name": "Y<sub>1</sub> receptor",
        "accession": "P25929",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "pancreatic polypeptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "or1a1_human",
        "name": "Olfactory receptor 1A1",
        "accession": "Q9P1Q5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 1A1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npy2r_human",
        "name": "Y<sub>2</sub> receptor",
        "accession": "P49146",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "PYY-(3-36)"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            },
            {
                "name": "neuropeptide Y-(3-36)"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npy4r_human",
        "name": "Y<sub>4</sub> receptor",
        "accession": "P50391",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "PYY-(3-36)"
            },
            {
                "name": "PYY-(3-36)"
            },
            {
                "name": "pancreatic polypeptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npy5r_human",
        "name": "Y<sub>5</sub> receptor",
        "accession": "Q15761",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "PYY-(3-36)"
            },
            {
                "name": "PYY-(3-36)"
            },
            {
                "name": "pancreatic polypeptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "npy6r_human",
        "name": "y<sub>6</sub> receptor",
        "accession": "Q99463",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "y<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ntr1_human",
        "name": "NTS<sub>1</sub> receptor",
        "accession": "P30989",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neurotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NTS<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "large neuromedin N"
            },
            {
                "name": "large neurotensin"
            },
            {
                "name": "neuromedin N"
            },
            {
                "name": "neuromedin N"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neuromedin N"
            },
            {
                "name": "large neuromedin N"
            },
            {
                "name": "large neuromedin N"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ntr2_human",
        "name": "NTS<sub>2</sub> receptor",
        "accession": "O95665",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neurotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NTS<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "neuromedin N"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oprd_human",
        "name": "&delta; receptor",
        "accession": "P41143",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&delta; receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "endomorphin-1"
            },
            {
                "name": "&beta;-endorphin"
            },
            {
                "name": "&beta;-endorphin"
            },
            {
                "name": "&beta;-endorphin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oprk_human",
        "name": "&kappa; receptor",
        "accession": "P41145",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&kappa; receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "&beta;-endorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "big dynorphin"
            },
            {
                "name": "big dynorphin"
            },
            {
                "name": "big dynorphin"
            },
            {
                "name": "&beta;-endorphin"
            },
            {
                "name": "&beta;-endorphin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oprm_human",
        "name": "&mu; receptor",
        "accession": "P35372",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&mu; receptor",
        "endogenous_ligands": [
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "endomorphin-1"
            },
            {
                "name": "&beta;-endorphin"
            },
            {
                "name": "endomorphin-2"
            },
            {
                "name": "&beta;-endorphin"
            },
            {
                "name": "&beta;-endorphin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oprx_human",
        "name": "NOP receptor",
        "accession": "P41146",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NOP receptor",
        "endogenous_ligands": [
            {
                "name": "nociceptin/orphanin FQ"
            },
            {
                "name": "nociceptin/orphanin FQ"
            },
            {
                "name": "nociceptin/orphanin FQ"
            },
            {
                "name": "nociceptin/orphanin FQ"
            },
            {
                "name": "nociceptin/orphanin FQ"
            },
            {
                "name": "nociceptin/orphanin FQ"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ox1r_human",
        "name": "OX<sub>1</sub> receptor",
        "accession": "O43613",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-B"
            },
            {
                "name": "orexin-B"
            },
            {
                "name": "orexin-B"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ox2r_human",
        "name": "OX<sub>2</sub> receptor",
        "accession": "O43614",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-A"
            },
            {
                "name": "orexin-B"
            },
            {
                "name": "orexin-B"
            },
            {
                "name": "orexin-B"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "qrfpr_human",
        "name": "QRFP receptor",
        "accession": "Q96P65",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Peptide P518 receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "QRFP receptor",
        "endogenous_ligands": [
            {
                "name": "QRFP43 (43RFa)"
            },
            {
                "name": "QRFP43"
            },
            {
                "name": "QRFP26 (26RFa)"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "prlhr_human",
        "name": "PrRP receptor",
        "accession": "P49683",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prolactin-releasing peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PrRP receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "PrRP-20"
            },
            {
                "name": "PrRP-20"
            },
            {
                "name": "PrRP-31"
            },
            {
                "name": "PrRP-31"
            },
            {
                "name": "PTHrP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "par1_human",
        "name": "PAR1",
        "accession": "P25116",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR1",
        "endogenous_ligands": [
            {
                "name": "thrombin"
            },
            {
                "name": "thrombin"
            },
            {
                "name": "thrombin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "par2_human",
        "name": "PAR2",
        "accession": "P55085",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "par3_human",
        "name": "PAR3",
        "accession": "O00254",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR3",
        "endogenous_ligands": [
            {
                "name": "thrombin"
            },
            {
                "name": "thrombin"
            },
            {
                "name": "thrombin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "par4_human",
        "name": "PAR4",
        "accession": "Q96RI0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR4",
        "endogenous_ligands": [
            {
                "name": "cathepsin G"
            },
            {
                "name": "cathepsin G"
            },
            {
                "name": "cathepsin G"
            },
            {
                "name": "thrombin"
            },
            {
                "name": "thrombin"
            },
            {
                "name": "thrombin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "rxfp1_human",
        "name": "RXFP1",
        "accession": "Q9HBX9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP1",
        "endogenous_ligands": [
            {
                "name": "relaxin-1"
            },
            {
                "name": "relaxin"
            },
            {
                "name": "relaxin-3"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "rxfp2_human",
        "name": "RXFP2",
        "accession": "Q8WXD0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP2",
        "endogenous_ligands": [
            {
                "name": "relaxin-1"
            },
            {
                "name": "relaxin"
            },
            {
                "name": "relaxin-3"
            },
            {
                "name": "INSL3"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "rl3r1_human",
        "name": "RXFP3",
        "accession": "Q9NSD7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP3",
        "endogenous_ligands": [
            {
                "name": "relaxin"
            },
            {
                "name": "relaxin-3"
            },
            {
                "name": "relaxin-3 (B chain)"
            },
            {
                "name": "INSL5"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "rl3r2_human",
        "name": "RXFP4",
        "accession": "Q8TDU9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP4",
        "endogenous_ligands": [
            {
                "name": "relaxin-3"
            },
            {
                "name": "relaxin-3 (B chain)"
            },
            {
                "name": "INSL5"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ssr1_human",
        "name": "SST1 receptor",
        "accession": "P30872",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST1 receptor",
        "endogenous_ligands": [
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "CST-17"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ssr2_human",
        "name": "SST2 receptor",
        "accession": "P30874",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST2 receptor",
        "endogenous_ligands": [
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "CST-17"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ssr3_human",
        "name": "SST3 receptor",
        "accession": "P32745",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST3 receptor",
        "endogenous_ligands": [
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "CST-17"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ssr4_human",
        "name": "SST4 receptor",
        "accession": "P31391",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST4 receptor",
        "endogenous_ligands": [
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "CST-17"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ssr5_human",
        "name": "SST5 receptor",
        "accession": "P35346",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST5 receptor",
        "endogenous_ligands": [
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "CST-17"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "nk1r_human",
        "name": "NK<sub>1</sub> receptor",
        "accession": "P25103",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "hemokinin 1"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide-&gamma;"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "nk2r_human",
        "name": "NK<sub>2</sub> receptor",
        "accession": "P21452",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "hemokinin 1"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "neuropeptide K"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            },
            {
                "name": "neuropeptide &gamma;"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "nk3r_human",
        "name": "NK<sub>3</sub> receptor",
        "accession": "P29371",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "or1g1_human",
        "name": "Olfactory receptor 1G1",
        "accession": "P47890",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 1G1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "trfr_human",
        "name": "TRH<sub>1</sub> receptor",
        "accession": "P34981",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Thyrotropin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "TRH<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ur2r_human",
        "name": "UT receptor",
        "accession": "Q9UKP6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Urotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "UT receptor",
        "endogenous_ligands": [
            {
                "name": "urotensin-II"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            },
            {
                "name": "urotensin II-related peptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "v1ar_human",
        "name": "V<sub>1A</sub> receptor",
        "accession": "P37288",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "v1br_human",
        "name": "V<sub>1B</sub> receptor",
        "accession": "P47901",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "v2r_human",
        "name": "V<sub>2</sub> receptor",
        "accession": "P30518",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oxyr_human",
        "name": "OT receptor",
        "accession": "P30559",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OT receptor",
        "endogenous_ligands": [
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cml1_human",
        "name": "chemerin receptor",
        "accession": "Q99788",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemerin receptor",
        "ligand_type": "Protein receptors",
        "subfamily": "chemerin receptor",
        "endogenous_ligands": [
            {
                "name": "chemerin"
            },
            {
                "name": "resolvin E1"
            },
            {
                "name": "resolvin E1"
            },
            {
                "name": "EPA"
            },
            {
                "name": "18R-HEPE"
            },
            {
                "name": "chemerin C-terminal peptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cml2_human",
        "name": "chemerin receptor 2",
        "accession": "P46091",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemerin receptor",
        "ligand_type": "Protein receptors",
        "subfamily": "chemerin receptor 2",
        "endogenous_ligands": [
            {
                "name": "chemerin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr1_human",
        "name": "CCR1",
        "accession": "P32246",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR1",
        "endogenous_ligands": [
            {
                "name": "CCL14"
            },
            {
                "name": "CCL15"
            },
            {
                "name": "CCL23"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL13"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL16"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL8"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr2_human",
        "name": "CCR2",
        "accession": "P41597",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR2",
        "endogenous_ligands": [
            {
                "name": "CCL7"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL13"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL24"
            },
            {
                "name": "CCL26"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL16"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL11"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr3_human",
        "name": "CCR3",
        "accession": "P51677",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [
            {
                "name": "CCL15"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL13"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL24"
            },
            {
                "name": "CCL26"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CXCL10"
            },
            {
                "name": "CXCL11"
            },
            {
                "name": "CXCL9"
            },
            {
                "name": "CCL28"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL24"
            },
            {
                "name": "CXCL9"
            },
            {
                "name": "CXCL10"
            },
            {
                "name": "CXCL10"
            },
            {
                "name": "CXCL11"
            },
            {
                "name": "CCL28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr4_human",
        "name": "CCR4",
        "accession": "P51679",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR4",
        "endogenous_ligands": [
            {
                "name": "CCL17"
            },
            {
                "name": "CCL22"
            },
            {
                "name": "CCL22"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr5_human",
        "name": "CCR5",
        "accession": "P51681",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [
            {
                "name": "CCL14"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL13"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL16"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL11"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr6_human",
        "name": "CCR6",
        "accession": "P51684",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR6",
        "endogenous_ligands": [
            {
                "name": "CCL20"
            },
            {
                "name": "beta-defensin 4A"
            },
            {
                "name": "CCL20"
            },
            {
                "name": "CCL20"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr7_human",
        "name": "CCR7",
        "accession": "P32248",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR7",
        "endogenous_ligands": [
            {
                "name": "CCL19"
            },
            {
                "name": "CCL21"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr8_human",
        "name": "CCR8",
        "accession": "P51685",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR8",
        "endogenous_ligands": [
            {
                "name": "CCL1"
            },
            {
                "name": "CCL1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr9_human",
        "name": "CCR9",
        "accession": "P51686",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR9",
        "endogenous_ligands": [
            {
                "name": "CCL25"
            },
            {
                "name": "CCL25"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccr10_human",
        "name": "CCR10",
        "accession": "P46092",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR10",
        "endogenous_ligands": [
            {
                "name": "CCL27"
            },
            {
                "name": "CCL28"
            },
            {
                "name": "CCL27"
            },
            {
                "name": "CCL28"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cxcr1_human",
        "name": "CXCR1",
        "accession": "P25024",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [
            {
                "name": "CXCL6"
            },
            {
                "name": "CXCL8"
            },
            {
                "name": "cytokine domain of tyrosyl tRNA synthetase"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cxcr2_human",
        "name": "CXCR2",
        "accession": "P25025",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [
            {
                "name": "CXCL1"
            },
            {
                "name": "CXCL6"
            },
            {
                "name": "CXCL8"
            },
            {
                "name": "CXCL1"
            },
            {
                "name": "CXCL2"
            },
            {
                "name": "CXCL3"
            },
            {
                "name": "CXCL5"
            },
            {
                "name": "CXCL7"
            },
            {
                "name": "CXCL1"
            },
            {
                "name": "CXCL2"
            },
            {
                "name": "CXCL2"
            },
            {
                "name": "CXCL3"
            },
            {
                "name": "CXCL3"
            },
            {
                "name": "CXCL5"
            },
            {
                "name": "CXCL5"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cxcr3_human",
        "name": "CXCR3",
        "accession": "P49682",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR3",
        "endogenous_ligands": [
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL13"
            },
            {
                "name": "CCL20"
            },
            {
                "name": "CCL19"
            },
            {
                "name": "CXCL10"
            },
            {
                "name": "CXCL11"
            },
            {
                "name": "CXCL9"
            },
            {
                "name": "CXCL12&alpha;"
            },
            {
                "name": "CXCL9"
            },
            {
                "name": "CXCL10"
            },
            {
                "name": "CXCL10"
            },
            {
                "name": "CXCL11"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cxcr4_human",
        "name": "CXCR4",
        "accession": "P61073",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [
            {
                "name": "CXCL12&beta;"
            },
            {
                "name": "CXCL12&alpha;"
            },
            {
                "name": "CXCL12"
            },
            {
                "name": "CXCL12&gamma;"
            },
            {
                "name": "CXCL12&delta;"
            },
            {
                "name": "CXCL12&epsilon;"
            },
            {
                "name": "CXCL12&phi;"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cxcr5_human",
        "name": "CXCR5",
        "accession": "P32302",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR5",
        "endogenous_ligands": [
            {
                "name": "CXCL13"
            },
            {
                "name": "CXCL13"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cxcr6_human",
        "name": "CXCR6",
        "accession": "O00574",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR6",
        "endogenous_ligands": [
            {
                "name": "CXCL16"
            },
            {
                "name": "CXCL16"
            },
            {
                "name": "CXCL16"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cx3c1_human",
        "name": "CX<sub>3</sub>CR1",
        "accession": "P49238",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CX<sub>3</sub>CR1",
        "endogenous_ligands": [
            {
                "name": "CX<sub>3</sub>CL1"
            },
            {
                "name": "CX<sub>3</sub>CL1"
            },
            {
                "name": "CX<sub>3</sub>CL1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "xcr1_human",
        "name": "XCR1",
        "accession": "P46094",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "XCR1",
        "endogenous_ligands": [
            {
                "name": "XCL1"
            },
            {
                "name": "XCL2"
            },
            {
                "name": "XCL1"
            },
            {
                "name": "XCL1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ackr1_human",
        "name": "ACKR1",
        "accession": "Q16570",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [
            {
                "name": "CCL14"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL17"
            },
            {
                "name": "CXCL6"
            },
            {
                "name": "CXCL8"
            },
            {
                "name": "CXCL5"
            },
            {
                "name": "CXCL11"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ackr2_human",
        "name": "ACKR2",
        "accession": "O00590",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR2",
        "endogenous_ligands": [
            {
                "name": "CCL14"
            },
            {
                "name": "CCL3"
            },
            {
                "name": "CCL4"
            },
            {
                "name": "CCL5"
            },
            {
                "name": "CCL7"
            },
            {
                "name": "CCL11"
            },
            {
                "name": "CCL13"
            },
            {
                "name": "CCL2"
            },
            {
                "name": "CCL8"
            },
            {
                "name": "CCL17"
            },
            {
                "name": "CCL22"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ackr3_human",
        "name": "ACKR3",
        "accession": "P25106",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR3",
        "endogenous_ligands": [
            {
                "name": "CXCL11"
            },
            {
                "name": "CXCL12&alpha;"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ackr4_human",
        "name": "ACKR4",
        "accession": "Q9NPB9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR4",
        "endogenous_ligands": [
            {
                "name": "CCL19"
            },
            {
                "name": "CCL21"
            },
            {
                "name": "CCL25"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ccrl2_human",
        "name": "CCRL2",
        "accession": "O00421",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCRL2",
        "endogenous_ligands": [
            {
                "name": "CCL19"
            },
            {
                "name": "chemerin C-terminal peptide"
            },
            {
                "name": "CCL19"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fshr_human",
        "name": "FSH receptor",
        "accession": "P23945",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [
            {
                "name": "FSH"
            },
            {
                "name": "FSH"
            },
            {
                "name": "FSH"
            },
            {
                "name": "FSH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lshr_human",
        "name": "LH receptor",
        "accession": "P22888",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "LH receptor",
        "endogenous_ligands": [
            {
                "name": "LH"
            },
            {
                "name": "hCG"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "tshr_human",
        "name": "TSH receptor",
        "accession": "P16473",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "TSH receptor",
        "endogenous_ligands": [
            {
                "name": "TSH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pkr1_human",
        "name": "PKR<sub>1</sub>",
        "accession": "Q8TCW9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prokineticin receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "PKR<sub>1</sub>",
        "endogenous_ligands": [
            {
                "name": "prokineticin-1"
            },
            {
                "name": "prokineticin-2"
            },
            {
                "name": "prokineticin-2&beta;"
            },
            {
                "name": "prokineticin-1"
            },
            {
                "name": "prokineticin-1"
            },
            {
                "name": "prokineticin-2"
            },
            {
                "name": "prokineticin-2"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pkr2_human",
        "name": "PKR<sub>2</sub>",
        "accession": "Q8NFJ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prokineticin receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "PKR<sub>2</sub>",
        "endogenous_ligands": [
            {
                "name": "prokineticin-1"
            },
            {
                "name": "prokineticin-2"
            },
            {
                "name": "prokineticin-2&beta;"
            },
            {
                "name": "prokineticin-1"
            },
            {
                "name": "prokineticin-1"
            },
            {
                "name": "prokineticin-2"
            },
            {
                "name": "prokineticin-2"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ffar1_human",
        "name": "FFA1 receptor",
        "accession": "O14842",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA1 receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-linolenic acid"
            },
            {
                "name": "docosahexaenoic acid"
            },
            {
                "name": "oleic acid"
            },
            {
                "name": "myristic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ffar2_human",
        "name": "FFA2 receptor",
        "accession": "O15552",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA2 receptor",
        "endogenous_ligands": [
            {
                "name": "acetic acid"
            },
            {
                "name": "butyric acid"
            },
            {
                "name": "propanoic acid"
            },
            {
                "name": "<i>trans</i>-2-methylcrotonic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ffar3_human",
        "name": "FFA3 receptor",
        "accession": "O14843",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA3 receptor",
        "endogenous_ligands": [
            {
                "name": "butyric acid"
            },
            {
                "name": "propanoic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ffar4_human",
        "name": "FFA4 receptor",
        "accession": "Q5NUL3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA4 receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-linolenic acid"
            },
            {
                "name": "linoleic acid"
            },
            {
                "name": "oleic acid"
            },
            {
                "name": "myristic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr42_human",
        "name": "GPR42",
        "accession": "O15529",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR42",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lt4r1_human",
        "name": "BLT<sub>1</sub> receptor",
        "accession": "Q15722",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "BLT<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LTB<sub>4</sub>"
            },
            {
                "name": "LTB<sub>4</sub>"
            },
            {
                "name": "20-hydroxy-LTB<sub>4</sub>"
            },
            {
                "name": "20-hydroxy-LTB<sub>4</sub>"
            },
            {
                "name": "12R-HETE"
            },
            {
                "name": "12R-HETE"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lt4r2_human",
        "name": "BLT<sub>2</sub> receptor",
        "accession": "Q9NPC1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "BLT<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "12S-HPETE"
            },
            {
                "name": "LTB<sub>4</sub>"
            },
            {
                "name": "LTB<sub>4</sub>"
            },
            {
                "name": "20-hydroxy-LTB<sub>4</sub>"
            },
            {
                "name": "15S-HETE"
            },
            {
                "name": "15S-HETE"
            },
            {
                "name": "12S-HETE"
            },
            {
                "name": "12S-HETE"
            },
            {
                "name": "12R-HETE"
            },
            {
                "name": "12-hydroxyheptadecatrienoic acid"
            },
            {
                "name": "12-hydroxyheptadecatrienoic acid"
            },
            {
                "name": "12-epi LTB<sub>4</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cltr1_human",
        "name": "CysLT<sub>1</sub> receptor",
        "accession": "Q9Y271",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LTE<sub>4</sub>"
            },
            {
                "name": "LTE<sub>4</sub>"
            },
            {
                "name": "LTD<sub>4</sub>"
            },
            {
                "name": "LTD<sub>4</sub>"
            },
            {
                "name": "LTC<sub>4</sub>"
            },
            {
                "name": "LTC<sub>4</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cltr2_human",
        "name": "CysLT<sub>2</sub> receptor",
        "accession": "Q9NS75",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LTE<sub>4</sub>"
            },
            {
                "name": "LTE<sub>4</sub>"
            },
            {
                "name": "LTD<sub>4</sub>"
            },
            {
                "name": "LTD<sub>4</sub>"
            },
            {
                "name": "LTC<sub>4</sub>"
            },
            {
                "name": "LTC<sub>4</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oxer1_human",
        "name": "OXE receptor",
        "accession": "Q8TDS5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "OXE receptor",
        "endogenous_ligands": [
            {
                "name": "5S-HPETE"
            },
            {
                "name": "5S-HPETE"
            },
            {
                "name": "5S-HETE"
            },
            {
                "name": "5S-HETE"
            },
            {
                "name": "5-oxo-ETE"
            },
            {
                "name": "5-oxo-ETE"
            },
            {
                "name": "5-oxo-C20:3"
            },
            {
                "name": "5-oxo-C20:3"
            },
            {
                "name": "5-oxo-ODE"
            },
            {
                "name": "5-oxo-ODE"
            },
            {
                "name": "5-oxo-15-HETE"
            },
            {
                "name": "5-oxo-15-HETE"
            },
            {
                "name": "5-oxo-20-HETE"
            },
            {
                "name": "5-oxo-12-HETE"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lpar1_human",
        "name": "LPA<sub>1</sub> receptor",
        "accession": "Q92633",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lpar2_human",
        "name": "LPA<sub>2</sub> receptor",
        "accession": "Q9HBW0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            },
            {
                "name": "farnesyl diphosphate"
            },
            {
                "name": "farnesyl monophosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lpar3_human",
        "name": "LPA<sub>3</sub> receptor",
        "accession": "Q9UBY5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            },
            {
                "name": "farnesyl diphosphate"
            },
            {
                "name": "farnesyl monophosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lpar4_human",
        "name": "LPA<sub>4</sub> receptor",
        "accession": "Q99677",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            },
            {
                "name": "farnesyl diphosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lpar5_human",
        "name": "LPA<sub>5</sub> receptor",
        "accession": "Q9H1C0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            },
            {
                "name": "farnesyl diphosphate"
            },
            {
                "name": "farnesyl monophosphate"
            },
            {
                "name": "N-arachidonoylglycine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lpar6_human",
        "name": "LPA<sub>6</sub> receptor",
        "accession": "P43657",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>6</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "s1pr1_human",
        "name": "S1P<sub>1</sub> receptor",
        "accession": "P21453",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "dihydrosphingosine 1-phosphate"
            },
            {
                "name": "sphingosylphosphorylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "s1pr2_human",
        "name": "S1P<sub>2</sub> receptor",
        "accession": "O95136",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "dihydrosphingosine 1-phosphate"
            },
            {
                "name": "sphingosylphosphorylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "s1pr3_human",
        "name": "S1P<sub>3</sub> receptor",
        "accession": "Q99500",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "dihydrosphingosine 1-phosphate"
            },
            {
                "name": "sphingosylphosphorylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "s1pr4_human",
        "name": "S1P<sub>4</sub> receptor",
        "accession": "O95977",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "dihydrosphingosine 1-phosphate"
            },
            {
                "name": "sphingosylphosphorylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "s1pr5_human",
        "name": "S1P<sub>5</sub> receptor",
        "accession": "Q9H228",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "dihydrosphingosine 1-phosphate"
            },
            {
                "name": "sphingosylphosphorylcholine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cnr1_human",
        "name": "CB<sub>1</sub> receptor",
        "accession": "P21554",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "2-arachidonoylglycerol"
            },
            {
                "name": "anandamide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "cnr2_human",
        "name": "CB<sub>2</sub> receptor",
        "accession": "P34972",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "2-arachidonoylglycerol"
            },
            {
                "name": "anandamide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr18_human",
        "name": "GPR18",
        "accession": "Q14330",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR18",
        "endogenous_ligands": [
            {
                "name": "N-arachidonoylglycine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr55_human",
        "name": "GPR55",
        "accession": "Q9Y2T6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR55",
        "endogenous_ligands": [
            {
                "name": "2-arachidonoylglycerol"
            },
            {
                "name": "anandamide"
            },
            {
                "name": "N-palmitoylethanolamine"
            },
            {
                "name": "lysophosphatidylinositol"
            },
            {
                "name": "2-arachidonoylglycerolphosphoinositol"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp119_human",
        "name": "GPR119",
        "accession": "Q8TDV5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR119",
        "endogenous_ligands": [
            {
                "name": "anandamide"
            },
            {
                "name": "N-oleoylethanolamide"
            },
            {
                "name": "N-oleoylethanolamide"
            },
            {
                "name": "SEA"
            },
            {
                "name": "SEA"
            },
            {
                "name": "N-palmitoylethanolamine"
            },
            {
                "name": "N-palmitoylethanolamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ptafr_human",
        "name": "PAF receptor",
        "accession": "P25105",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Platelet-activating factor receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "PAF receptor",
        "endogenous_ligands": [
            {
                "name": "PAF"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pd2r_human",
        "name": "DP<sub>1</sub> receptor",
        "accession": "Q13258",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "DP<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGJ<sub>2</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pd2r2_human",
        "name": "DP<sub>2</sub> receptor",
        "accession": "Q9Y5Y4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "DP<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGJ<sub>2</sub>"
            },
            {
                "name": "PGD<sub>3</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pe2r1_human",
        "name": "EP<sub>1</sub> receptor",
        "accession": "P34995",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pe2r2_human",
        "name": "EP<sub>2</sub> receptor",
        "accession": "P43116",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pe2r3_human",
        "name": "EP<sub>3</sub> receptor",
        "accession": "P43115",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pe2r4_human",
        "name": "EP<sub>4</sub> receptor",
        "accession": "P35408",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pf2r_human",
        "name": "FP receptor",
        "accession": "P43088",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FP receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pi2r_human",
        "name": "IP receptor",
        "accession": "P43119",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "IP receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r_human",
        "name": "TP receptor",
        "accession": "P21731",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "TP receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGI<sub>2</sub>"
            },
            {
                "name": "thromboxane A<sub>2</sub>"
            },
            {
                "name": "PGH<sub>2</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mtr1a_human",
        "name": "MT<sub>1</sub> receptor",
        "accession": "P48039",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melatonin",
        "ligand_type": "Melatonin receptors",
        "subfamily": "MT<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "melatonin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mtr1b_human",
        "name": "MT<sub>2</sub> receptor",
        "accession": "P49286",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melatonin",
        "ligand_type": "Melatonin receptors",
        "subfamily": "MT<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "melatonin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "aa1r_human",
        "name": "A<sub>1</sub> receptor",
        "accession": "P30542",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "adenosine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "aa2ar_human",
        "name": "A<sub>2A</sub> receptor",
        "accession": "P29274",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "adenosine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "aa2br_human",
        "name": "A<sub>2B</sub> receptor",
        "accession": "P29275",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "adenosine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "aa3r_human",
        "name": "A<sub>3</sub> receptor",
        "accession": "P0DMS8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "adenosine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2ry1_human",
        "name": "P2Y<sub>1</sub> receptor",
        "accession": "P47900",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ADP"
            },
            {
                "name": "ADP"
            },
            {
                "name": "ATP"
            },
            {
                "name": "ATP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2ry2_human",
        "name": "P2Y<sub>2</sub> receptor",
        "accession": "P41231",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ATP"
            },
            {
                "name": "UTP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2ry4_human",
        "name": "P2Y<sub>4</sub> receptor",
        "accession": "P51582",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ATP"
            },
            {
                "name": "UTP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2ry6_human",
        "name": "P2Y<sub>6</sub> receptor",
        "accession": "Q15077",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>6</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ADP"
            },
            {
                "name": "UTP"
            },
            {
                "name": "UDP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2y11_human",
        "name": "P2Y<sub>11</sub> receptor",
        "accession": "Q96G91",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>11</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ADP"
            },
            {
                "name": "ATP"
            },
            {
                "name": "UTP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2y12_human",
        "name": "P2Y<sub>12</sub> receptor",
        "accession": "Q9H244",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>12</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ADP"
            },
            {
                "name": "ATP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2y13_human",
        "name": "P2Y<sub>13</sub> receptor",
        "accession": "Q9BPV8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>13</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ADP"
            },
            {
                "name": "ATP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2y14_human",
        "name": "P2Y<sub>14</sub> receptor",
        "accession": "Q15391",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>14</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "UDP"
            },
            {
                "name": "UDP N-acetyl-glucosamine"
            },
            {
                "name": "UDP-galactose"
            },
            {
                "name": "UDP-glucose"
            },
            {
                "name": "UDP-glucuronic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpbar_human",
        "name": "GPBA receptor",
        "accession": "Q8TDU6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bile acid receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPBA receptor",
        "endogenous_ligands": [
            {
                "name": "chenodeoxycholic acid"
            },
            {
                "name": "chenodeoxycholic acid"
            },
            {
                "name": "cholic acid"
            },
            {
                "name": "cholic acid"
            },
            {
                "name": "deoxycholic acid"
            },
            {
                "name": "deoxycholic acid"
            },
            {
                "name": "lithocholic acid"
            },
            {
                "name": "lithocholic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gper1_human",
        "name": "GPER",
        "accession": "Q99527",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Estrogen (G protein-coupled) receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPER",
        "endogenous_ligands": [
            {
                "name": "17&beta;-estradiol"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hcar1_human",
        "name": "HCA<sub>1</sub> receptor",
        "accession": "Q9BXC0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Hydroxycarboxylic acid receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "HCA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-lactic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hcar2_human",
        "name": "HCA<sub>2</sub> receptor",
        "accession": "Q8TDS4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Hydroxycarboxylic acid receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "HCA<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "butyric acid"
            },
            {
                "name": "&beta;-D-hydroxybutyric acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "hcar3_human",
        "name": "HCA<sub>3</sub> receptor",
        "accession": "P49019",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Hydroxycarboxylic acid receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "HCA<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "3-hydroxyoctanoic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "oxgr1_human",
        "name": "oxoglutarate receptor",
        "accession": "Q96P68",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Oxoglutarate receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "oxoglutarate receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-ketoglutaric acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "sucr1_human",
        "name": "succinate receptor",
        "accession": "Q9BXA5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Succinate receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "succinate receptor",
        "endogenous_ligands": [
            {
                "name": "succinic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opsd_human",
        "name": "Rhodopsin",
        "accession": "P08100",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opn3_human",
        "name": "OPN3",
        "accession": "Q9H1Y3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opn4_human",
        "name": "OPN4",
        "accession": "Q9UHM6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opn5_human",
        "name": "OPN5",
        "accession": "Q6U736",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opsb_human",
        "name": "OPN1SW",
        "accession": "P03999",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opsg_human",
        "name": "OPN1MW",
        "accession": "P04001",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "opsr_human",
        "name": "OPN1LW",
        "accession": "P04000",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o2t11_human",
        "name": "Olfactory receptor 2T11",
        "accession": "Q8NH01",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 2T11",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51a2_human",
        "name": "Olfactory receptor 51A2",
        "accession": "Q8NGJ7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51A2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51a4_human",
        "name": "Olfactory receptor 51A4",
        "accession": "Q8NGJ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51A4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51a7_human",
        "name": "Olfactory receptor 51A7",
        "accession": "Q8NH64",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51A7",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51b2_human",
        "name": "Olfactory receptor 51B2",
        "accession": "Q9Y5P1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51B2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51b4_human",
        "name": "Olfactory receptor 51B4",
        "accession": "Q9Y5P0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51B4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51b5_human",
        "name": "Olfactory receptor 51B5",
        "accession": "Q9H339",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51B5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51b6_human",
        "name": "Olfactory receptor 51B6",
        "accession": "Q9H340",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51B6",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51d1_human",
        "name": "Olfactory receptor 51D1",
        "accession": "Q8NGF3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51D1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51e1_human",
        "name": "Olfactory receptor 51E1",
        "accession": "Q8TCB6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51E1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51e2_human",
        "name": "Olfactory receptor 51E2",
        "accession": "Q9H255",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51E2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51f1_human",
        "name": "Olfactory receptor 51F1",
        "accession": "A6NGY5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51F1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51f2_human",
        "name": "Olfactory receptor 51F2",
        "accession": "Q8NH61",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51F2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51g1_human",
        "name": "Olfactory receptor 51G1",
        "accession": "Q8NGK1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51G1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51g2_human",
        "name": "Olfactory receptor 51G2",
        "accession": "Q8NGK0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51G2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51i1_human",
        "name": "Olfactory receptor 51I1",
        "accession": "Q9H343",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51I1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51i2_human",
        "name": "Olfactory receptor 51I2",
        "accession": "Q9H344",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51I2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51j1_human",
        "name": "Olfactory receptor 51J1",
        "accession": "Q9H342",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51J1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51l1_human",
        "name": "Olfactory receptor 51L1",
        "accession": "Q8NGJ5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51L1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51m1_human",
        "name": "Olfactory receptor 51M1",
        "accession": "Q9H341",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51M1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51q1_human",
        "name": "Olfactory receptor 51Q1",
        "accession": "Q8NH59",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51Q1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51s1_human",
        "name": "Olfactory receptor 51S1",
        "accession": "Q8NGJ8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51S1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51t1_human",
        "name": "Olfactory receptor 51T1",
        "accession": "Q8NGJ9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51T1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o51v1_human",
        "name": "Olfactory receptor 51V1",
        "accession": "Q9H2C8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 51V1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "o52e4_human",
        "name": "Olfactory receptor 52E4",
        "accession": "Q8NGH9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Olfactory",
        "ligand_type": "Olfactory receptors",
        "subfamily": "Olfactory receptor 52E4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr3_human",
        "name": "GPR3",
        "accession": "P46089",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR3",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr4_human",
        "name": "GPR4",
        "accession": "P46093",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr6_human",
        "name": "GPR6",
        "accession": "P46095",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR6",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr12_human",
        "name": "GPR12",
        "accession": "P47775",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR12",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr15_human",
        "name": "GPR15",
        "accession": "P49685",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR15",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr17_human",
        "name": "GPR17",
        "accession": "Q13304",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR17",
        "endogenous_ligands": [
            {
                "name": "ATP"
            },
            {
                "name": "UDP"
            },
            {
                "name": "UDP-galactose"
            },
            {
                "name": "UDP-glucose"
            },
            {
                "name": "LTE<sub>4</sub>"
            },
            {
                "name": "LTD<sub>4</sub>"
            },
            {
                "name": "LTC<sub>4</sub>"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr19_human",
        "name": "GPR19",
        "accession": "Q15760",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR19",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr20_human",
        "name": "GPR20",
        "accession": "Q99678",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR20",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr21_human",
        "name": "GPR21",
        "accession": "Q99679",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR21",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr22_human",
        "name": "GPR22",
        "accession": "Q99680",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR22",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr25_human",
        "name": "GPR25",
        "accession": "O00155",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR25",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr26_human",
        "name": "GPR26",
        "accession": "Q8NDV2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR26",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr27_human",
        "name": "GPR27",
        "accession": "Q9NS67",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR27",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr31_human",
        "name": "GPR31",
        "accession": "O00270",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR31",
        "endogenous_ligands": [
            {
                "name": "12S-HETE"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr32_human",
        "name": "GPR32",
        "accession": "O75388",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR32",
        "endogenous_ligands": [
            {
                "name": "LXA<sub>4</sub>"
            },
            {
                "name": "LXA<sub>4</sub>"
            },
            {
                "name": "resolvin D1"
            },
            {
                "name": "resolvin D1"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr33_human",
        "name": "GPR33",
        "accession": "Q49SQ1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR33",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr34_human",
        "name": "GPR34",
        "accession": "Q9UPC5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR34",
        "endogenous_ligands": [
            {
                "name": "lysophosphatidylserine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr35_human",
        "name": "GPR35",
        "accession": "Q9HC97",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR35",
        "endogenous_ligands": [
            {
                "name": "kynurenic acid"
            },
            {
                "name": "2-oleoyl-LPA"
            },
            {
                "name": "2-Oleoyllysophosphatydic acid"
            },
            {
                "name": "1-Lyso-2-oleoyl-phosphatidic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr37_human",
        "name": "GPR37",
        "accession": "O15354",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR37",
        "endogenous_ligands": [
            {
                "name": "prosaptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "g37l1_human",
        "name": "GPR37L1",
        "accession": "O60883",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR37L1",
        "endogenous_ligands": [
            {
                "name": "prosaptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr39_human",
        "name": "GPR39",
        "accession": "O43194",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR39",
        "endogenous_ligands": [
            {
                "name": "Zn<sup>2+</sup>"
            },
            {
                "name": "obestatin"
            },
            {
                "name": "obestatin"
            },
            {
                "name": "obestatin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr45_human",
        "name": "GPR45",
        "accession": "Q9Y5Y3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR45",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mtr1l_human",
        "name": "GPR50",
        "accession": "Q13585",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR50",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr52_human",
        "name": "GPR52",
        "accession": "Q9Y2T5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR52",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr61_human",
        "name": "GPR61",
        "accession": "Q9BZJ8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR61",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr62_human",
        "name": "GPR62",
        "accession": "Q9BZJ7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR62",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr63_human",
        "name": "GPR63",
        "accession": "Q9BZJ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR63",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "dihydrosphingosine 1-phosphate"
            },
            {
                "name": "dioleoylphosphatidic acid"
            },
            {
                "name": "[(2S)-2-[(Z)-octadec-9-enoyl]oxy-3-phosphonooxypropyl] (Z)-octadec-9-enoate"
            },
            {
                "name": "1,2-Dioleoyl-sn-glycerol-3-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "psyr_human",
        "name": "GPR65",
        "accession": "Q8IYL9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR65",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ogr1_human",
        "name": "GPR68",
        "accession": "Q15743",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR68",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr75_human",
        "name": "GPR75",
        "accession": "O95800",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR75",
        "endogenous_ligands": [
            {
                "name": "CCL5"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr78_human",
        "name": "GPR78",
        "accession": "Q96P69",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR78",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr82_human",
        "name": "GPR82",
        "accession": "Q96P67",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR82",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr83_human",
        "name": "GPR83",
        "accession": "Q9NYM4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR83",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr84_human",
        "name": "GPR84",
        "accession": "Q9NQS5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR84",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr85_human",
        "name": "GPR85",
        "accession": "P60893",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR85",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr87_human",
        "name": "GPR87",
        "accession": "Q9BY21",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR87",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpr88_human",
        "name": "GPR88",
        "accession": "Q9GZN0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR88",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp101_human",
        "name": "GPR101",
        "accession": "Q96P66",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR101",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp132_human",
        "name": "GPR132",
        "accession": "Q9UNW8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR132",
        "endogenous_ligands": [
            {
                "name": "9-hydroxyoctadecadienoic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp135_human",
        "name": "GPR135",
        "accession": "Q8IZ08",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR135",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp139_human",
        "name": "GPR139",
        "accession": "Q6DWJ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR139",
        "endogenous_ligands": [
            {
                "name": "L-tryptophan"
            },
            {
                "name": "L-phenylalanine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp141_human",
        "name": "GPR141",
        "accession": "Q7Z602",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR141",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp142_human",
        "name": "GPR142",
        "accession": "Q7Z601",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR142",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp146_human",
        "name": "GPR146",
        "accession": "Q96CH1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR146",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp148_human",
        "name": "GPR148",
        "accession": "Q8TDV2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR148",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp149_human",
        "name": "GPR149",
        "accession": "Q86SP6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR149",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp150_human",
        "name": "GPR150",
        "accession": "Q8NGU9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR150",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp151_human",
        "name": "GPR151",
        "accession": "Q8TDV0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR151",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp152_human",
        "name": "GPR152",
        "accession": "Q8TDT2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR152",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp153_human",
        "name": "GPR153",
        "accession": "Q6NV75",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR153",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp160_human",
        "name": "GPR160",
        "accession": "Q9UJ42",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR160",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp161_human",
        "name": "GPR161",
        "accession": "Q8N6U8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR161",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp162_human",
        "name": "GPR162",
        "accession": "Q16538",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR162",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp171_human",
        "name": "GPR171",
        "accession": "O14626",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR171",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp173_human",
        "name": "GPR173",
        "accession": "Q9NS66",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR173",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp174_human",
        "name": "GPR174",
        "accession": "Q9BXC1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR174",
        "endogenous_ligands": [
            {
                "name": "lysophosphatidylserine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp176_human",
        "name": "GPR176",
        "accession": "Q14439",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR176",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp182_human",
        "name": "GPR182",
        "accession": "O15218",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR182",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r16_pantr",
        "name": "TAS2R16",
        "accession": "Q646B3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R16",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gp183_human",
        "name": "GPR183",
        "accession": "P32249",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR183",
        "endogenous_ligands": [
            {
                "name": "27-hydroxycholesterol"
            },
            {
                "name": "25-hydroxycholesterol"
            },
            {
                "name": "7&alpha;,25-dihydroxycholesterol"
            },
            {
                "name": "7&alpha;-hydroxycholesterol"
            },
            {
                "name": "7&beta;-hydroxycholesterol"
            },
            {
                "name": "7&alpha;,27-dihydroxycholesterol"
            },
            {
                "name": "7&beta;, 27-dihydroxycholesterol"
            },
            {
                "name": "7&beta;, 25-dihydroxycholesterol"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lgr4_human",
        "name": "LGR4",
        "accession": "Q9BXB1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR4",
        "endogenous_ligands": [
            {
                "name": "R-spondin-1"
            },
            {
                "name": "R-spondin-2"
            },
            {
                "name": "R-spondin-3"
            },
            {
                "name": "R-spondin-4"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lgr5_human",
        "name": "LGR5",
        "accession": "O75473",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR5",
        "endogenous_ligands": [
            {
                "name": "R-spondin-1"
            },
            {
                "name": "R-spondin-2"
            },
            {
                "name": "R-spondin-3"
            },
            {
                "name": "R-spondin-4"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "lgr6_human",
        "name": "LGR6",
        "accession": "Q9HBX8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR6",
        "endogenous_ligands": [
            {
                "name": "R-spondin-1"
            },
            {
                "name": "R-spondin-2"
            },
            {
                "name": "R-spondin-3"
            },
            {
                "name": "R-spondin-4"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mas_human",
        "name": "MAS1",
        "accession": "P04201",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MAS1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mas1l_human",
        "name": "MAS1L",
        "accession": "P35410",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MAS1L",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgrd_human",
        "name": "MRGPRD",
        "accession": "Q8TDS7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRD",
        "endogenous_ligands": [
            {
                "name": "&beta;-alanine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgre_human",
        "name": "MRGPRE",
        "accession": "Q86SM8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRE",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgrf_human",
        "name": "MRGPRF",
        "accession": "Q96AM1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRF",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgrg_human",
        "name": "MRGPRG",
        "accession": "Q86SM5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRG",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgx1_human",
        "name": "MRGPRX1",
        "accession": "Q96LB2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX1",
        "endogenous_ligands": [
            {
                "name": "bovine adrenal medulla peptide 8-22"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgx2_human",
        "name": "MRGPRX2",
        "accession": "Q96LB1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [
            {
                "name": "PAMP-20"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgx3_human",
        "name": "MRGPRX3",
        "accession": "Q96LB0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "mrgx4_human",
        "name": "MRGPRX4",
        "accession": "Q96LA9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2ry8_human",
        "name": "P2RY8",
        "accession": "Q86VZ1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "P2RY8",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "p2y10_human",
        "name": "P2RY10",
        "accession": "O00398",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "P2RY10",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            },
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taar2_human",
        "name": "TAAR2",
        "accession": "Q9P1P5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR2",
        "endogenous_ligands": [
            {
                "name": "tryptamine"
            },
            {
                "name": "&beta;-phenylethylamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taar3_human",
        "name": "TAAR3",
        "accession": "Q9P1P4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR3",
        "endogenous_ligands": [
            {
                "name": "isoamylamine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taar5_human",
        "name": "TAAR5",
        "accession": "O14804",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taar6_human",
        "name": "TAAR6",
        "accession": "Q96RI8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR6",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taa7f_mouse",
        "name": "TAAR7F",
        "accession": "Q5QD08",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR7F",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "taar8_human",
        "name": "TAAR8",
        "accession": "Q969N4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR8",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "taar9_human",
        "name": "TAAR9",
        "accession": "Q96RI9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR9",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "calcr_human",
        "name": "CT receptor",
        "accession": "P30988",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CT receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-CGRP"
            },
            {
                "name": "&beta;-CGRP"
            },
            {
                "name": "adrenomedullin"
            },
            {
                "name": "adrenomedullin 2/intermedin"
            },
            {
                "name": "calcitonin"
            },
            {
                "name": "amylin"
            },
            {
                "name": "amylin"
            },
            {
                "name": "amylin"
            },
            {
                "name": "amylin"
            },
            {
                "name": "amylin"
            },
            {
                "name": "&alpha;-CGRP"
            },
            {
                "name": "&alpha;-CGRP"
            },
            {
                "name": "&beta;-CGRP"
            },
            {
                "name": "calcitonin"
            },
            {
                "name": "calcitonin"
            },
            {
                "name": "&beta;-CGRP"
            },
            {
                "name": "calcitonin (salmon)"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "calrl_human",
        "name": "calcitonin receptor-like receptor",
        "accession": "Q16602",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "calcitonin receptor-like receptor",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "crfr1_human",
        "name": "CRF<sub>1</sub> receptor",
        "accession": "P34998-2",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 2"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "crfr2_human",
        "name": "CRF<sub>2</sub> receptor",
        "accession": "Q13324",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 2"
            },
            {
                "name": "urocortin 3"
            },
            {
                "name": "urocortin 2"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ghrhr_human",
        "name": "GHRH receptor",
        "accession": "Q02643",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GHRH receptor",
        "endogenous_ligands": [
            {
                "name": "GHRH"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "GHRH"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gipr_human",
        "name": "GIP receptor",
        "accession": "P48546",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GIP receptor",
        "endogenous_ligands": [
            {
                "name": "gastric inhibitory polypeptide"
            },
            {
                "name": "gastric inhibitory polypeptide"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "glp1r_human",
        "name": "GLP-1 receptor",
        "accession": "P43220",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GLP-1 receptor",
        "endogenous_ligands": [
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon-like peptide 1-(7-36) amide"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            },
            {
                "name": "glucagon-like peptide 1-(7-37)"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "glp2r_human",
        "name": "GLP-2 receptor",
        "accession": "O95838",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GLP-2 receptor",
        "endogenous_ligands": [
            {
                "name": "glucagon-like peptide 2"
            },
            {
                "name": "glucagon-like peptide 2-(3-33)"
            },
            {
                "name": "glucagon-like peptide 2"
            },
            {
                "name": "glucagon-like peptide 2-(3-33)"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "glr_human",
        "name": "glucagon receptor",
        "accession": "P47871",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "glucagon receptor",
        "endogenous_ligands": [
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            },
            {
                "name": "glucagon"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "sctr_human",
        "name": "secretin receptor",
        "accession": "P47872",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "secretin receptor",
        "endogenous_ligands": [
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "secretin"
            },
            {
                "name": "secretin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pth1r_human",
        "name": "PTH1 receptor",
        "accession": "Q03431",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [
            {
                "name": "PTH"
            },
            {
                "name": "PTH"
            },
            {
                "name": "PTHrP-(1-36)"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "PTH"
            },
            {
                "name": "PTHrP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pth2r_human",
        "name": "PTH2 receptor",
        "accession": "P49190",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH2 receptor",
        "endogenous_ligands": [
            {
                "name": "PTH"
            },
            {
                "name": "PTH"
            },
            {
                "name": "PTHrP-(1-36)"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "PTHrP-(1-34) (human)"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "TIP39"
            },
            {
                "name": "PTH"
            },
            {
                "name": "PTHrP"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "pacr_human",
        "name": "PAC<sub>1</sub> receptor",
        "accession": "P41586",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAC<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PHM"
            },
            {
                "name": "PHV"
            },
            {
                "name": "PHV"
            },
            {
                "name": "PHI"
            },
            {
                "name": "PHI"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "vipr1_human",
        "name": "VPAC<sub>1</sub> receptor",
        "accession": "P32241",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "PHM"
            },
            {
                "name": "secretin"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "secretin"
            },
            {
                "name": "secretin"
            },
            {
                "name": "PHI"
            },
            {
                "name": "PHI"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "vipr2_human",
        "name": "VPAC<sub>2</sub> receptor",
        "accession": "P41587",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "secretin"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "GHRH"
            },
            {
                "name": "secretin"
            },
            {
                "name": "secretin"
            },
            {
                "name": "PHI"
            },
            {
                "name": "PHI"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrl1_human",
        "name": "ADGRL1",
        "accession": "O94910",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL1",
        "endogenous_ligands": [
            {
                "name": "lasso D"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrl2_human",
        "name": "ADGRL2",
        "accession": "O95490",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrl3_human",
        "name": "ADGRL3",
        "accession": "Q9HAR2",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrl4_human",
        "name": "ADGRL4",
        "accession": "Q9HBW9",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agre1_human",
        "name": "ADGRE1",
        "accession": "Q14246",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agre2_human",
        "name": "ADGRE2",
        "accession": "Q9UHX3",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agre3_human",
        "name": "ADGRE3",
        "accession": "Q9BY15",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agre4_human",
        "name": "ADGRE4P",
        "accession": "Q86SQ3",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE4P",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agre5_human",
        "name": "ADGRE5",
        "accession": "P48960",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agra1_human",
        "name": "ADGRA1",
        "accession": "Q86SQ6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRA",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRA1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm7_human",
        "name": "mGlu<sub>7</sub> receptor",
        "accession": "Q14831",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>7</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            },
            {
                "name": "L-serine-O-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agra2_human",
        "name": "ADGRA2",
        "accession": "Q96PE1",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRA",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRA2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agra3_human",
        "name": "ADGRA3",
        "accession": "Q8IWK6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRA",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRA3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "celr1_human",
        "name": "CELSR1",
        "accession": "Q9NYQ6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "celr2_human",
        "name": "CELSR2",
        "accession": "Q9HCU4",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "celr3_human",
        "name": "CELSR3",
        "accession": "Q9NYQ7",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrd1_human",
        "name": "ADGRD1",
        "accession": "Q6QNK2",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRD",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRD1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrd2_human",
        "name": "ADGRD2",
        "accession": "Q7Z7M1",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRD",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRD2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrf1_human",
        "name": "ADGRF1",
        "accession": "Q5T601",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrf2_human",
        "name": "ADGRF2",
        "accession": "Q8IZF7",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gabr1_human",
        "name": "GABA<sub>B1</sub>",
        "accession": "Q9UBS5",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B1</sub>",
        "endogenous_ligands": [
            {
                "name": "GABA"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrf3_human",
        "name": "ADGRF3",
        "accession": "Q8IZF5",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrf4_human",
        "name": "ADGRF4",
        "accession": "Q8IZF3",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrf5_human",
        "name": "ADGRF5",
        "accession": "Q8IZF2",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrb1_human",
        "name": "ADGRB1",
        "accession": "O14514",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB1",
        "endogenous_ligands": [
            {
                "name": "phosphatidylserine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrb2_human",
        "name": "ADGRB2",
        "accession": "O60241",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "casr_human",
        "name": "CaS receptor",
        "accession": "P41180",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Calcium-sensing receptors",
        "ligand_type": "Ion receptors",
        "subfamily": "CaS receptor",
        "endogenous_ligands": [
            {
                "name": "Ca<sup>2+</sup>"
            },
            {
                "name": "Mg<sup>2+</sup>"
            },
            {
                "name": "spermine"
            },
            {
                "name": "L-tryptophan"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrb3_human",
        "name": "ADGRB3",
        "accession": "O60242",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg1_human",
        "name": "ADGRG1",
        "accession": "Q9Y653",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg2_human",
        "name": "ADGRG2",
        "accession": "Q8IZP9",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg3_human",
        "name": "ADGRG3",
        "accession": "Q86Y34",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg4_human",
        "name": "ADGRG4",
        "accession": "Q8IZF6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg5_human",
        "name": "ADGRG5",
        "accession": "Q8IZF4",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg6_human",
        "name": "ADGRG6",
        "accession": "Q86SQ4",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG6",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrg7_human",
        "name": "ADGRG7",
        "accession": "Q96K78",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG7",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "agrv1_human",
        "name": "ADGRV1",
        "accession": "Q8WXG9",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRV",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRV1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd10_human",
        "name": "FZD<sub>10</sub>",
        "accession": "Q9ULW2",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>10</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gabr2_human",
        "name": "GABA<sub>B2</sub>",
        "accession": "O75899",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B2</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm1_human",
        "name": "mGlu<sub>1</sub> receptor",
        "accession": "Q13255",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm2_human",
        "name": "mGlu<sub>2</sub> receptor",
        "accession": "Q14416",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm3_human",
        "name": "mGlu<sub>3</sub> receptor",
        "accession": "Q14832",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            },
            {
                "name": "NAAG"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm4_human",
        "name": "mGlu<sub>4</sub> receptor",
        "accession": "Q14833",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            },
            {
                "name": "L-serine-O-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm5_human",
        "name": "mGlu<sub>5</sub> receptor",
        "accession": "P41594",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm6_human",
        "name": "mGlu<sub>6</sub> receptor",
        "accession": "O15303",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>6</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            },
            {
                "name": "L-serine-O-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r40_human",
        "name": "TAS2R40",
        "accession": "P59535",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R40",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "grm8_human",
        "name": "mGlu<sub>8</sub> receptor",
        "accession": "O00222",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>8</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            },
            {
                "name": "L-serine-O-phosphate"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ts1r1_human",
        "name": "TAS1R1",
        "accession": "Q7RTX1",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ts1r2_human",
        "name": "TAS1R2",
        "accession": "Q8TE23",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ts1r3_human",
        "name": "TAS1R3",
        "accession": "Q7RTX0",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp156_human",
        "name": "GPR156",
        "accession": "Q8NFN8",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR156",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp158_human",
        "name": "GPR158",
        "accession": "Q5T848",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR158",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp179_human",
        "name": "GPR179",
        "accession": "Q6PRD1",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR179",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "rai3_human",
        "name": "GPRC5A",
        "accession": "Q8NFJ5",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5A",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpc5b_human",
        "name": "GPRC5B",
        "accession": "Q9NZH0",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5B",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpc5c_human",
        "name": "GPRC5C",
        "accession": "Q9NQ84",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5C",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpc5d_human",
        "name": "GPRC5D",
        "accession": "Q9NZD1",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5D",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gpc6a_human",
        "name": "GPRC6 receptor",
        "accession": "Q5T6X5",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC6 receptor",
        "endogenous_ligands": [
            {
                "name": "L-alanine"
            },
            {
                "name": "L-arginine"
            },
            {
                "name": "L-citrulline"
            },
            {
                "name": "L-glutamine"
            },
            {
                "name": "L-lysine"
            },
            {
                "name": "L-ornithine"
            },
            {
                "name": "L-serine"
            },
            {
                "name": "glycine"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ste2_yeast",
        "name": "STE2",
        "accession": "D6VTK4",
        "receptor_class": "Class D1 (Ste2-like fungal pheromone)",
        "receptor_family": "STE2",
        "ligand_type": "Ste2-like receptors",
        "subfamily": "STE2",
        "endogenous_ligands": [],
        "species": "Saccharomyces cerevisiae"
    },
    {
        "entry_name": "fzd1_human",
        "name": "FZD<sub>1</sub>",
        "accession": "Q9UP38",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>1</sub>",
        "endogenous_ligands": [
            {
                "name": "Wnt-5a"
            },
            {
                "name": "Wnt-3a"
            },
            {
                "name": "Wnt-1"
            },
            {
                "name": "Wnt-2"
            },
            {
                "name": "Wnt-7b"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd2_human",
        "name": "FZD<sub>2</sub>",
        "accession": "Q14332",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>2</sub>",
        "endogenous_ligands": [
            {
                "name": "Wnt-5a"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd3_human",
        "name": "FZD<sub>3</sub>",
        "accession": "Q9NPG1",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>3</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd4_human",
        "name": "FZD<sub>4</sub>",
        "accession": "Q9ULV1",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>4</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd5_human",
        "name": "FZD<sub>5</sub>",
        "accession": "Q13467",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>5</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd6_human",
        "name": "FZD<sub>6</sub>",
        "accession": "O60353",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>6</sub>",
        "endogenous_ligands": [
            {
                "name": "Wnt-4"
            },
            {
                "name": "Wnt-5a"
            },
            {
                "name": "Wnt-3a"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd7_human",
        "name": "FZD<sub>7</sub>",
        "accession": "O75084",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>7</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd8_human",
        "name": "FZD<sub>8</sub>",
        "accession": "Q9H461",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>8</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "fzd9_human",
        "name": "FZD<sub>9</sub>",
        "accession": "O00144",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>9</sub>",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "smo_human",
        "name": "SMO",
        "accession": "Q99835",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "SMO",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r1_human",
        "name": "TAS2R1",
        "accession": "Q9NYW7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r3_human",
        "name": "TAS2R3",
        "accession": "Q9NYW6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R3",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r4_human",
        "name": "TAS2R4",
        "accession": "Q9NYW5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R4",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r5_human",
        "name": "TAS2R5",
        "accession": "Q9NYW4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R5",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r7_human",
        "name": "TAS2R7",
        "accession": "Q9NYW3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r8_human",
        "name": "TAS2R8",
        "accession": "Q9NYW2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R8",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "ta2r9_human",
        "name": "TAS2R9",
        "accession": "Q9NYW1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R9",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r10_human",
        "name": "TAS2R10",
        "accession": "Q9NYW0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R10",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r13_human",
        "name": "TAS2R13",
        "accession": "Q9NYV9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R13",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r14_human",
        "name": "TAS2R14",
        "accession": "Q9NYV8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R14",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r16_human",
        "name": "TAS2R16",
        "accession": "Q9NYV7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R16",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r19_human",
        "name": "TAS2R19",
        "accession": "P59542",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R19",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r20_human",
        "name": "TAS2R20",
        "accession": "P59543",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R20",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r30_human",
        "name": "TAS2R30",
        "accession": "P59541",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R30",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r31_human",
        "name": "TAS2R31",
        "accession": "P59538",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R31",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r38_human",
        "name": "TAS2R38",
        "accession": "P59533",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r39_human",
        "name": "TAS2R39",
        "accession": "P59534",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R39",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r41_human",
        "name": "TAS2R41",
        "accession": "P59536",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r42_human",
        "name": "TAS2R42",
        "accession": "Q7RTR8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R42",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r43_human",
        "name": "TAS2R43",
        "accession": "P59537",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R43",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r45_human",
        "name": "TAS2R45",
        "accession": "P59539",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R45",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r46_human",
        "name": "TAS2R46",
        "accession": "P59540",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R46",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r50_human",
        "name": "TAS2R50",
        "accession": "P59544",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R50",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "t2r60_human",
        "name": "TAS2R60",
        "accession": "P59551",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R60",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp107_human",
        "name": "GPR107",
        "accession": "Q5VW38",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR107",
        "endogenous_ligands": [
            {
                "name": "neuronostatin"
            },
            {
                "name": "neuronostatin"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "g137a_human",
        "name": "GPR137",
        "accession": "Q96N19",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR137",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "tpra1_human",
        "name": "TPRA1",
        "accession": "Q86W33",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TPRA1",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp143_human",
        "name": "GPR143",
        "accession": "P51810",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR143",
        "endogenous_ligands": [
            {
                "name": "levodopa"
            }
        ],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp157_human",
        "name": "GPR157",
        "accession": "Q5UAW9",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR157",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "tm116_human",
        "name": "GPR214",
        "accession": "Q8NCL8",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR214",
        "endogenous_ligands": [],
        "species": "Homo sapiens"
    },
    {
        "entry_name": "gp160_rat",
        "name": "GPR160",
        "accession": "Q66H29",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR160",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_tetng",
        "name": "Rhodopsin",
        "accession": "Q9DGG4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Tetraodon nigroviridis"
    },
    {
        "entry_name": "t2r30_pantr",
        "name": "TAS2R30",
        "accession": "Q646C1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R30",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "g37l1_mouse",
        "name": "GPR37L1",
        "accession": "Q99JG2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR37L1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r13_panpa",
        "name": "TAS2R13",
        "accession": "Q646D8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R13",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "mrgrd_mouse",
        "name": "MRGPRD",
        "accession": "Q91ZB8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRD",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "nk2r_rat",
        "name": "NK<sub>2</sub> receptor",
        "accession": "P16610",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "adrb1_sheep",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "Q28927",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "ednra_sheep",
        "name": "ET<sub>A</sub> receptor",
        "accession": "Q95L55",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "mc4r_vulvu",
        "name": "MC<sub>4</sub> receptor",
        "accession": "Q0Z8I9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Vulpes vulpes"
    },
    {
        "entry_name": "cxcr4_calja",
        "name": "CXCR4",
        "accession": "Q8HZU1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Callithrix jacchus"
    },
    {
        "entry_name": "mrgrg_mouse",
        "name": "MRGPRG",
        "accession": "Q91ZB5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRG",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "nmbr_mouse",
        "name": "BB<sub>1</sub> receptor",
        "accession": "O54799",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr85_rat",
        "name": "GPR85",
        "accession": "P60895",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR85",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pacr_rat",
        "name": "PAC<sub>1</sub> receptor",
        "accession": "P32215",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAC<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            },
            {
                "name": "PACAP-38"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "p2ry1_melga",
        "name": "P2Y<sub>1</sub> receptor",
        "accession": "P49652",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Meleagris gallopavo"
    },
    {
        "entry_name": "ccr8_mouse",
        "name": "CCR8",
        "accession": "P56484",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR8",
        "endogenous_ligands": [
            {
                "name": "CCL8"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opn3_mouse",
        "name": "OPN3",
        "accession": "Q9WUK7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oprx_pig",
        "name": "NOP receptor",
        "accession": "P79292",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NOP receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "v1ar_micoh",
        "name": "V<sub>1A</sub> receptor",
        "accession": "Q9WTV9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Microtus ochrogaster"
    },
    {
        "entry_name": "t2r30_ponpy",
        "name": "TAS2R30",
        "accession": "Q645V4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R30",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "t2r31_panpa",
        "name": "TAS2R31",
        "accession": "Q646E0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R31",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "t2r42_pantr",
        "name": "TAS2R42",
        "accession": "Q646B8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R42",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "c5ar1_rat",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P97520",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mc3r_mouse",
        "name": "MC<sub>3</sub> receptor",
        "accession": "P33033",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "agouti"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "brs3_cavpo",
        "name": "BB<sub>3</sub> receptor",
        "accession": "P35371",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "ccr5_rat",
        "name": "CCR5",
        "accession": "O08556",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ntr2_mouse",
        "name": "NTS<sub>2</sub> receptor",
        "accession": "P70310",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neurotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NTS<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuromedin N"
            },
            {
                "name": "neuromedin N"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            },
            {
                "name": "xenin"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ednrb_rat",
        "name": "ET<sub>B</sub> receptor",
        "accession": "P21451",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            },
            {
                "name": "endothelin-3"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr3_cavpo",
        "name": "CCR3",
        "accession": "Q9Z2I3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "mc4r_rat",
        "name": "MC<sub>4</sub> receptor",
        "accession": "P70596",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ts1r2_gorgo",
        "name": "TAS1R2",
        "accession": "A3QNZ9",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "gpr20_mouse",
        "name": "GPR20",
        "accession": "Q8BYC4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR20",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "celr2_mouse",
        "name": "CELSR2",
        "accession": "Q9R0M0",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "g37l1_bovin",
        "name": "GPR37L1",
        "accession": "Q17QD8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR37L1",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "cxcr2_rat",
        "name": "CXCR2",
        "accession": "P35407",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r46_papha",
        "name": "TAS2R46",
        "accession": "Q646G0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R46",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "gipr_mouse",
        "name": "GIP receptor",
        "accession": "Q0P543",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GIP receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mc5r_pig",
        "name": "MC<sub>5</sub> receptor",
        "accession": "Q9MZV8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "kissr_mouse",
        "name": "kisspeptin receptor",
        "accession": "Q91V45",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Kisspeptin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "kisspeptin receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pth1r_canlf",
        "name": "PTH1 receptor",
        "accession": "Q9TU31",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "ccr5_canlf",
        "name": "CCR5",
        "accession": "Q5ECR9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gp101_mouse",
        "name": "GPR101",
        "accession": "Q80T62",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR101",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "acm3_ponpy",
        "name": "M<sub>3</sub> receptor",
        "accession": "Q9N2A2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "bkrb1_mouse",
        "name": "B<sub>1</sub> receptor",
        "accession": "Q61125",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp158_mouse",
        "name": "GPR158",
        "accession": "Q8C419",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR158",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "nmur1_rat",
        "name": "NMU1 receptor",
        "accession": "Q9JJI5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuromedin U receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NMU1 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "lpar2_macfa",
        "name": "LPA<sub>2</sub> receptor",
        "accession": "Q95KH4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "ta2r4_pantr",
        "name": "TAS2R4",
        "accession": "Q646B0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R4",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ccr3_chlae",
        "name": "CCR3",
        "accession": "P56492",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "opsd_sarsp",
        "name": "Rhodopsin",
        "accession": "P79903",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sargocentron spiniferum"
    },
    {
        "entry_name": "fzd10_chick",
        "name": "FZD<sub>10</sub>",
        "accession": "Q9PWH2",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>10</sub>",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "opsg_mouse",
        "name": "OPN1MW",
        "accession": "O35599",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "drd5_mouse",
        "name": "D<sub>5</sub> receptor",
        "accession": "Q8BLD9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "hrh2_rat",
        "name": "H<sub>2</sub> receptor",
        "accession": "P25102",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r20_ponpy",
        "name": "TAS2R20",
        "accession": "Q645V6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R20",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "5ht1b_canlf",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P79250",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "par1_papha",
        "name": "PAR1",
        "accession": "P56488",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR1",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "5ht2a_rat",
        "name": "5-HT<sub>2A</sub> receptor",
        "accession": "P14842",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            },
            {
                "name": "tryptamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "hrh1_ponpy",
        "name": "H<sub>1</sub> receptor",
        "accession": "Q9N2B0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "5ht6r_pantr",
        "name": "5-HT<sub>6</sub> receptor",
        "accession": "Q5IS65",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "cnr2_mouse",
        "name": "CB<sub>2</sub> receptor",
        "accession": "P47936",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "hrh2_cavpo",
        "name": "H<sub>2</sub> receptor",
        "accession": "P47747",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "npy6r_mouse",
        "name": "y<sub>6</sub> receptor",
        "accession": "Q61212",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "y<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr3_mouse",
        "name": "GPR3",
        "accession": "P35413",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsb_anoca",
        "name": "OPN1SW",
        "accession": "P51471",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Anolis carolinensis"
    },
    {
        "entry_name": "glr_rat",
        "name": "glucagon receptor",
        "accession": "P30082",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "glucagon receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "p2y12_rat",
        "name": "P2Y<sub>12</sub> receptor",
        "accession": "Q9EPX4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>12</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ednra_mouse",
        "name": "ET<sub>A</sub> receptor",
        "accession": "Q61614",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht6r_rat",
        "name": "5-HT<sub>6</sub> receptor",
        "accession": "P31388",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>6</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccrl2_pig",
        "name": "CCRL2",
        "accession": "Q75ZH0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCRL2",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "gpr83_mouse",
        "name": "GPR83",
        "accession": "P30731",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR83",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_plemo",
        "name": "CCR5",
        "accession": "Q95NC2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Plecturocebus moloch"
    },
    {
        "entry_name": "p2ry2_mouse",
        "name": "P2Y<sub>2</sub> receptor",
        "accession": "P35383",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_cebal",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864G9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cebus albifrons"
    },
    {
        "entry_name": "s1pr3_mouse",
        "name": "S1P<sub>3</sub> receptor",
        "accession": "Q9Z0U9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "rl3r1_mouse",
        "name": "RXFP3",
        "accession": "Q8BGE9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "p2ry1_cavpo",
        "name": "P2Y<sub>1</sub> receptor",
        "accession": "P59902",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "t2r50_macmu",
        "name": "TAS2R50",
        "accession": "Q645T6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R50",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "ffar4_macfa",
        "name": "FFA4 receptor",
        "accession": "C8YUV0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA4 receptor",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "opsr_chick",
        "name": "OPN1LW",
        "accession": "P22329",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "opsb_apime",
        "name": "OPN1SW",
        "accession": "P90680",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Apis mellifera"
    },
    {
        "entry_name": "ccr2_rat",
        "name": "CCR2",
        "accession": "O55193",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gnrhr_bovin",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "P32236",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht1a_pantr",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q9N298",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "acm1_drome",
        "name": "M<sub>1</sub> receptor",
        "accession": "P16395",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Drosophila melanogaster"
    },
    {
        "entry_name": "adrb3_mouse",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "P25962",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-noradrenaline"
            },
            {
                "name": "(&plusmn;)-adrenaline"
            },
            {
                "name": "(+)-adrenaline"
            },
            {
                "name": "(+)-adrenaline"
            },
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-adrenaline"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr9_mouse",
        "name": "CCR9",
        "accession": "Q9WUT7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR9",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cxcr2_macmu",
        "name": "CXCR2",
        "accession": "Q28519",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "s1pr4_mouse",
        "name": "S1P<sub>4</sub> receptor",
        "accession": "Q9Z0L1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp156_rat",
        "name": "GPR156",
        "accession": "Q8K451",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR156",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr4_cerat",
        "name": "CXCR4",
        "accession": "O62747",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Cercocebus atys"
    },
    {
        "entry_name": "grm3_rat",
        "name": "mGlu<sub>3</sub> receptor",
        "accession": "P31422",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ada1d_rat",
        "name": "&alpha;<sub>1D</sub>-adrenoceptor",
        "accession": "P23944",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1D</sub>-adrenoceptor",
        "endogenous_ligands": [
            {
                "name": "(-)-adrenaline"
            },
            {
                "name": "(-)-noradrenaline"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "calrl_parol",
        "name": "calcitonin receptor-like receptor",
        "accession": "Q9IB86",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "calcitonin receptor-like receptor",
        "endogenous_ligands": [],
        "species": "Paralichthys olivaceus"
    },
    {
        "entry_name": "5ht5a_rat",
        "name": "5-HT<sub>5A</sub> receptor",
        "accession": "P35364",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>5A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr82_mouse",
        "name": "GPR82",
        "accession": "Q8BZR0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR82",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_colpo",
        "name": "CCR5",
        "accession": "Q95NC8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Colobus polykomos"
    },
    {
        "entry_name": "ccr1_macmu",
        "name": "CCR1",
        "accession": "P56482",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR1",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "5ht1e_pantr",
        "name": "5-HT<sub>1E</sub> receptor",
        "accession": "Q9N2B6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1E</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "lt4r1_bovin",
        "name": "BLT<sub>1</sub> receptor",
        "accession": "Q3T181",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "BLT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "p2ry4_xenla",
        "name": "P2Y<sub>4</sub> receptor",
        "accession": "P79928",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "gp135_rat",
        "name": "GPR135",
        "accession": "Q7TQN7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR135",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ednrb_bovin",
        "name": "ET<sub>B</sub> receptor",
        "accession": "P28088",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gp183_rat",
        "name": "GPR183",
        "accession": "D4A7K7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR183",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "lshr_chick",
        "name": "LH receptor",
        "accession": "Q90674",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "LH receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "mshr_sheep",
        "name": "MC<sub>1</sub> receptor",
        "accession": "O19037",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "tpra1_mouse",
        "name": "TPRA1",
        "accession": "Q99MU1",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TPRA1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ssr5_rat",
        "name": "SST5 receptor",
        "accession": "P30938",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST5 receptor",
        "endogenous_ligands": [
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr37_rat",
        "name": "GPR37",
        "accession": "Q9QYC6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR37",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mshr_leoch",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864I2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Leontopithecus chrysopygus"
    },
    {
        "entry_name": "ptafr_bovin",
        "name": "PAF receptor",
        "accession": "Q9TTY5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Platelet-activating factor receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "PAF receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "celr2_rat",
        "name": "CELSR2",
        "accession": "Q9QYP2",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_litct",
        "name": "Rhodopsin",
        "accession": "P51470",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Lithobates catesbeianus"
    },
    {
        "entry_name": "npy1r_xenla",
        "name": "Y<sub>1</sub> receptor",
        "accession": "P34992",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "sctr_mouse",
        "name": "secretin receptor",
        "accession": "Q5FWI2",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "secretin receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r13_rat",
        "name": "TAS2R13",
        "accession": "Q9JKT7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R13",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "acm4_chick",
        "name": "M<sub>4</sub> receptor",
        "accession": "P17200",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "nmur2_bovin",
        "name": "NMU2 receptor",
        "accession": "Q58CW4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuromedin U receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NMU2 receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ada2a_danre",
        "name": "&alpha;<sub>2A</sub>-adrenoceptor",
        "accession": "Q90WY4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "v1br_rat",
        "name": "V<sub>1B</sub> receptor",
        "accession": "P48974",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mshr_chick",
        "name": "MC<sub>1</sub> receptor",
        "accession": "P55167",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "p2ry2_pig",
        "name": "P2Y<sub>2</sub> receptor",
        "accession": "Q5YA25",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "bkrb1_tupmi",
        "name": "B<sub>1</sub> receptor",
        "accession": "Q8HZP1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Tupaia minor"
    },
    {
        "entry_name": "v2r_pig",
        "name": "V<sub>2</sub> receptor",
        "accession": "P32307",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "mshr_felca",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q865E9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Felis catus"
    },
    {
        "entry_name": "celr1_mouse",
        "name": "CELSR1",
        "accession": "O35161",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "adrb3_cavpo",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "Q60483",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "opsd_prose",
        "name": "Rhodopsin",
        "accession": "O18486",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Procambarus seminolae"
    },
    {
        "entry_name": "c3ar_oncmy",
        "name": "C3a receptor",
        "accession": "Q2WED0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C3a receptor",
        "endogenous_ligands": [],
        "species": "Oncorhynchus mykiss"
    },
    {
        "entry_name": "cxcr3_canlf",
        "name": "CXCR3",
        "accession": "Q5KSK8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR3",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "opsd_allmi",
        "name": "Rhodopsin",
        "accession": "P52202",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Alligator mississippiensis"
    },
    {
        "entry_name": "gpr15_macmu",
        "name": "GPR15",
        "accession": "O97663",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR15",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "acthr_cavpo",
        "name": "MC<sub>2</sub> receptor",
        "accession": "Q9Z1S9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "ta2r9_macmu",
        "name": "TAS2R9",
        "accession": "Q645T0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R9",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "gpr33_panpa",
        "name": "GPR33",
        "accession": "Q49SQ2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR33",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "mshr_alopa",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864G2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Alouatta palliata"
    },
    {
        "entry_name": "5ht1b_felca",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "Q588Y6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Felis catus"
    },
    {
        "entry_name": "aa3r_rabit",
        "name": "A<sub>3</sub> receptor",
        "accession": "O02667",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ta2r7_rat",
        "name": "TAS2R7",
        "accession": "Q9JKE9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "s1pr3_takru",
        "name": "S1P<sub>3</sub> receptor",
        "accession": "Q9PUQ8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Takifugu rubripes"
    },
    {
        "entry_name": "oprx_rat",
        "name": "NOP receptor",
        "accession": "P35370",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NOP receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "fzd10_mouse",
        "name": "FZD<sub>10</sub>",
        "accession": "Q8BKG4",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>10</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r13_ponpy",
        "name": "TAS2R13",
        "accession": "Q645V1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R13",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "ccr5_michu",
        "name": "CCR5",
        "accession": "Q6WN98",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Mico humeralifer"
    },
    {
        "entry_name": "gpr39_bovin",
        "name": "GPR39",
        "accession": "B4XF06",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR39",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "agrv1_mouse",
        "name": "ADGRV1",
        "accession": "Q8VHN7",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRV",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRV1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd9_mouse",
        "name": "FZD<sub>9</sub>",
        "accession": "Q9R216",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>9</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_faxvi",
        "name": "Rhodopsin",
        "accession": "O16019",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Faxonius virilis"
    },
    {
        "entry_name": "pd2rl_rat",
        "name": "DP<sub>2</sub> receptor",
        "accession": "O35932",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "DP<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "agrg1_mouse",
        "name": "ADGRG1",
        "accession": "Q8K209",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "npbw1_mouse",
        "name": "NPBW1 receptor",
        "accession": "P49681",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide W/neuropeptide B receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPBW1 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "lgr6_mouse",
        "name": "LGR6",
        "accession": "Q3UVD5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR6",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fshr_mouse",
        "name": "FSH receptor",
        "accession": "P35378",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "c5ar1_canlf",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P30992",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "pth1r_bovin",
        "name": "PTH1 receptor",
        "accession": "Q1LZF7",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ednrb_cotja",
        "name": "ET<sub>B</sub> receptor",
        "accession": "Q90328",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Coturnix japonica"
    },
    {
        "entry_name": "rxfp2_canlf",
        "name": "RXFP2",
        "accession": "Q5XM32",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP2",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "t2r16_rat",
        "name": "TAS2R16",
        "accession": "Q9JKU0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R16",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "oprd_rat",
        "name": "&delta; receptor",
        "accession": "P33533",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&delta; receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "npbw1_bovin",
        "name": "NPBW1 receptor",
        "accession": "Q8MJV3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide W/neuropeptide B receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPBW1 receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "drd3_rat",
        "name": "D<sub>3</sub> receptor",
        "accession": "P19020",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "agrg6_danre",
        "name": "ADGRG6",
        "accession": "C6KFA3",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG6",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "apj_rat",
        "name": "apelin receptor",
        "accession": "Q9JHG3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Apelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "apelin receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r42_panpa",
        "name": "TAS2R42",
        "accession": "Q5Y4Z2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R42",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "smo_danre",
        "name": "SMO",
        "accession": "Q5RH73",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "SMO",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "mshr_calgo",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864H6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Callimico goeldii"
    },
    {
        "entry_name": "crfr1_xenla",
        "name": "CRF<sub>1</sub> receptor",
        "accession": "O42602",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "hrh2_mouse",
        "name": "H<sub>2</sub> receptor",
        "accession": "P97292",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mc5r_sheep",
        "name": "MC<sub>5</sub> receptor",
        "accession": "P41983",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "opsd_zeufa",
        "name": "Rhodopsin",
        "accession": "O42604",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Zeus faber"
    },
    {
        "entry_name": "5ht1a_canlf",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q6XXX9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "tr113_rat",
        "name": "TAS2R30",
        "accession": "Q67ES1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R30",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "c5ar1_macmu",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P79188",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "nk2r_canlf",
        "name": "NK<sub>2</sub> receptor",
        "accession": "Q5DUB2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gnrhr_rat",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "P30969",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "GnRH I"
            },
            {
                "name": "GnRH I"
            },
            {
                "name": "GnRH I"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_macne",
        "name": "CCR5",
        "accession": "P61815",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Macaca nemestrina"
    },
    {
        "entry_name": "opsr_canlf",
        "name": "OPN1LW",
        "accession": "O18914",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gpr18_ampam",
        "name": "GPR18",
        "accession": "Q93127",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR18",
        "endogenous_ligands": [],
        "species": "Amphibalanus amphitrite"
    },
    {
        "entry_name": "aa1r_rat",
        "name": "A<sub>1</sub> receptor",
        "accession": "P25099",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "adenosine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_salpv",
        "name": "Rhodopsin",
        "accession": "Q9YGZ3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Salaria pavo"
    },
    {
        "entry_name": "vipr_melga",
        "name": "VPAC<sub>1</sub> receptor",
        "accession": "Q91085",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Meleagris gallopavo"
    },
    {
        "entry_name": "mchr2_macfa",
        "name": "MCH<sub>2</sub> receptor",
        "accession": "Q8SQ54",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanin-concentrating hormone",
        "ligand_type": "Peptide receptors",
        "subfamily": "MCH<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "t2r13_gorgo",
        "name": "TAS2R13",
        "accession": "Q645Z5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R13",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "cml1_bovin",
        "name": "chemerin receptor",
        "accession": "B9VR26",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemerin receptor",
        "ligand_type": "Protein receptors",
        "subfamily": "chemerin receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ackr1_mouse",
        "name": "ACKR1",
        "accession": "Q9QUI6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_pommi",
        "name": "Rhodopsin",
        "accession": "P35403",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Pomatoschistus minutus"
    },
    {
        "entry_name": "ghsr_rabit",
        "name": "ghrelin receptor",
        "accession": "A5A4K9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Ghrelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ghrelin receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ccr5_trajo",
        "name": "CCR5",
        "accession": "Q95NC6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Trachypithecus johnii"
    },
    {
        "entry_name": "mshr_chapn",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q80SZ5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Chaetodipus penicillatus"
    },
    {
        "entry_name": "npy1r_cavpo",
        "name": "Y<sub>1</sub> receptor",
        "accession": "Q9WVD0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "opsd_camsc",
        "name": "Rhodopsin",
        "accession": "O16018",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cambarellus shufeldtii"
    },
    {
        "entry_name": "gpbar_bovin",
        "name": "GPBA receptor",
        "accession": "Q862A9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bile acid receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPBA receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "fzd8_mouse",
        "name": "FZD<sub>8</sub>",
        "accession": "Q61091",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>8</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ffar2_rat",
        "name": "FFA2 receptor",
        "accession": "Q76EI6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA2 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "qrfpr_mouse",
        "name": "QRFP receptor",
        "accession": "P83861",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Peptide P518 receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "QRFP receptor",
        "endogenous_ligands": [
            {
                "name": "QRFP43"
            },
            {
                "name": "QRFP26"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsb_chick",
        "name": "OPN1SW",
        "accession": "P28682",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "agrb1_rat",
        "name": "ADGRB1",
        "accession": "C0HL12",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ada1b_rat",
        "name": "&alpha;<sub>1B</sub>-adrenoceptor",
        "accession": "P15823",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1B</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "acm2_mouse",
        "name": "M<sub>2</sub> receptor",
        "accession": "Q9ERZ4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "v1br_mouse",
        "name": "V<sub>1B</sub> receptor",
        "accession": "Q9WU02",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "tr123_rat",
        "name": "TAS2R14",
        "accession": "Q9JKF0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R14",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "galr3_rat",
        "name": "GAL<sub>3</sub> receptor",
        "accession": "O88626",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin"
            },
            {
                "name": "galanin-like peptide"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ackr1_gorgo",
        "name": "ACKR1",
        "accession": "Q95LF9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "gpr45_mouse",
        "name": "GPR45",
        "accession": "Q9EQQ4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR45",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r14_gorgo",
        "name": "TAS2R14",
        "accession": "Q645Z2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R14",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "ccr5_lopat",
        "name": "CCR5",
        "accession": "P61755",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Lophocebus aterrimus"
    },
    {
        "entry_name": "ccr2_macmu",
        "name": "CCR2",
        "accession": "O18793",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR2",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "mshr_canlf",
        "name": "MC<sub>1</sub> receptor",
        "accession": "O77616",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "5ht1d_cavpo",
        "name": "5-HT<sub>1D</sub> receptor",
        "accession": "Q60484",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1D</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "npbw1_rat",
        "name": "NPBW1 receptor",
        "accession": "Q56UD9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide W/neuropeptide B receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPBW1 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "5ht1a_gorgo",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q9N297",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "gabr1_caeel",
        "name": "GABA<sub>B1</sub>",
        "accession": "H2L0Q3",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B1</sub>",
        "endogenous_ligands": [],
        "species": "Caenorhabditis elegans"
    },
    {
        "entry_name": "agre1_mouse",
        "name": "ADGRE1",
        "accession": "Q61549",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r60_panpa",
        "name": "TAS2R60",
        "accession": "Q646D0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R60",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "gp173_bovin",
        "name": "GPR173",
        "accession": "Q5E9H8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR173",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht1b_didvi",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P35404",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Didelphis virginiana"
    },
    {
        "entry_name": "cxcr3_bovin",
        "name": "CXCR3",
        "accession": "Q5MD61",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR3",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "agrf5_rat",
        "name": "ADGRF5",
        "accession": "Q9WVT0",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF5",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mrgre_macfa",
        "name": "MRGPRE",
        "accession": "Q5U9D7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRE",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "opsb_carau",
        "name": "OPN1SW",
        "accession": "P32310",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Carassius auratus"
    },
    {
        "entry_name": "lpar1_sheep",
        "name": "LPA<sub>1</sub> receptor",
        "accession": "P46628",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "ccr4_canlf",
        "name": "CCR4",
        "accession": "Q8MJW8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR4",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gnrhr_bosmu",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "Q19PY9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos mutus grunniens"
    },
    {
        "entry_name": "mrgx2_trafr",
        "name": "MRGPRX2",
        "accession": "Q4QXU4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [],
        "species": "Trachypithecus francoisi"
    },
    {
        "entry_name": "tshr_pig",
        "name": "TSH receptor",
        "accession": "Q8SPP9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "TSH receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "gasr_rat",
        "name": "CCK<sub>2</sub> receptor",
        "accession": "P30553",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pe2r3_rat",
        "name": "EP<sub>3</sub> receptor",
        "accession": "P34980",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "acm2_rat",
        "name": "M<sub>2</sub> receptor",
        "accession": "P10980",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "acetylcholine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "agtr1_sheep",
        "name": "AT<sub>1</sub> receptor",
        "accession": "O77590",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "drd1_xenla",
        "name": "D<sub>1</sub> receptor",
        "accession": "P42289",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "5ht4r_rat",
        "name": "5-HT<sub>4</sub> receptor",
        "accession": "Q62758",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gasr_rabit",
        "name": "CCK<sub>2</sub> receptor",
        "accession": "P46627",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ccr4_mouse",
        "name": "CCR4",
        "accession": "P51680",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR4",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsr_anoca",
        "name": "OPN1LW",
        "accession": "P41592",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Anolis carolinensis"
    },
    {
        "entry_name": "nk2r_mouse",
        "name": "NK<sub>2</sub> receptor",
        "accession": "P30549",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "p2ry1_chick",
        "name": "P2Y<sub>1</sub> receptor",
        "accession": "P34996",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "p2y13_mouse",
        "name": "P2Y<sub>13</sub> receptor",
        "accession": "Q9D8I2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>13</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_sarpu",
        "name": "Rhodopsin",
        "accession": "P79902",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sargocentron punctatissimum"
    },
    {
        "entry_name": "gp173_mouse",
        "name": "GPR173",
        "accession": "Q6PI62",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR173",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "vipr2_mouse",
        "name": "VPAC<sub>2</sub> receptor",
        "accession": "P41588",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agra3_mouse",
        "name": "ADGRA3",
        "accession": "Q7TT36",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRA",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRA3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ssr2_rat",
        "name": "SST2 receptor",
        "accession": "P30680",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST2 receptor",
        "endogenous_ligands": [
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r40_papha",
        "name": "TAS2R40",
        "accession": "Q646F2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R40",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "t2r50_gorgo",
        "name": "TAS2R50",
        "accession": "Q646A1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R50",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "cnr1_rat",
        "name": "CB<sub>1</sub> receptor",
        "accession": "P20272",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "2-arachidonoylglycerol"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "crfr2_mouse",
        "name": "CRF<sub>2</sub> receptor",
        "accession": "Q60748",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "corticotrophin-releasing hormone"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 1"
            },
            {
                "name": "urocortin 2"
            },
            {
                "name": "urocortin 3"
            },
            {
                "name": "urocortin 3"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp161_xentr",
        "name": "GPR161",
        "accession": "B3DM66",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR161",
        "endogenous_ligands": [],
        "species": "Xenopus tropicalis"
    },
    {
        "entry_name": "agre1_rat",
        "name": "ADGRE1",
        "accession": "Q5Y4N8",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "nk3r_rat",
        "name": "NK<sub>3</sub> receptor",
        "accession": "P16177",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd4_mouse",
        "name": "D<sub>4</sub> receptor",
        "accession": "P51436",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pe2r2_canlf",
        "name": "EP<sub>2</sub> receptor",
        "accession": "Q9XT82",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "ackr3_mouse",
        "name": "ACKR3",
        "accession": "P56485",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "s1pr2_rat",
        "name": "S1P<sub>2</sub> receptor",
        "accession": "P47752",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mas_rat",
        "name": "MAS1",
        "accession": "P12526",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MAS1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "5ht2a_macmu",
        "name": "5-HT<sub>2A</sub> receptor",
        "accession": "P50128",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "gnrhr_octvu",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "Q2V2K5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Octopus vulgaris"
    },
    {
        "entry_name": "bkrb2_rabit",
        "name": "B<sub>2</sub> receptor",
        "accession": "Q28642",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ur2r_mouse",
        "name": "UT receptor",
        "accession": "Q8VIH9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Urotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "UT receptor",
        "endogenous_ligands": [
            {
                "name": "urotensin-II"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr2_mouse",
        "name": "CCR2",
        "accession": "P51683",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "tr140_mouse",
        "name": "TAS2R13",
        "accession": "Q7TQA4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R13",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_erypa",
        "name": "CCR5",
        "accession": "Q95ND0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Erythrocebus patas"
    },
    {
        "entry_name": "cltr1_cavpo",
        "name": "CysLT<sub>1</sub> receptor",
        "accession": "Q2NNR5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "gp171_rat",
        "name": "GPR171",
        "accession": "D4A4Q2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR171",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsb_conco",
        "name": "OPN1SW",
        "accession": "O13227",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Conger conger"
    },
    {
        "entry_name": "opsd_gamaf",
        "name": "Rhodopsin",
        "accession": "P79756",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Gambusia affinis"
    },
    {
        "entry_name": "t2r40_gorgo",
        "name": "TAS2R40",
        "accession": "Q645Y9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R40",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "t2r41_pantr",
        "name": "TAS2R41",
        "accession": "Q646B2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "5ht7r_mouse",
        "name": "5-HT<sub>7</sub> receptor",
        "accession": "P32304",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>7</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r43_papha",
        "name": "TAS2R43",
        "accession": "Q646F8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R43",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "agrb1_mouse",
        "name": "ADGRB1",
        "accession": "Q3UHD1",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mrgx2_ponpy",
        "name": "MRGPRX2",
        "accession": "Q4QXU3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "c3ar_cavpo",
        "name": "C3a receptor",
        "accession": "O88680",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C3a receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "5ht4r_cavpo",
        "name": "5-HT<sub>4</sub> receptor",
        "accession": "O70528",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "mshr_eulfu",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864F6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Eulemur fulvus fulvus"
    },
    {
        "entry_name": "lgr5_bovin",
        "name": "LGR5",
        "accession": "F1MT22",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR5",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht1f_pantr",
        "name": "5-HT<sub>1F</sub> receptor",
        "accession": "Q9N2D9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1F</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "agtr1_canlf",
        "name": "AT<sub>1</sub> receptor",
        "accession": "P43240",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gpr18_macfa",
        "name": "GPR18",
        "accession": "Q4R613",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR18",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "ccr5_trafr",
        "name": "CCR5",
        "accession": "O97878",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Trachypithecus francoisi"
    },
    {
        "entry_name": "opsd_sheep",
        "name": "Rhodopsin",
        "accession": "P02700",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "agrl2_rat",
        "name": "ADGRL2",
        "accession": "O88923",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r10_gorgo",
        "name": "TAS2R10",
        "accession": "Q645Z4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R10",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "opsd_rat",
        "name": "Rhodopsin",
        "accession": "P51489",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r39_rat",
        "name": "TAS2R39",
        "accession": "Q67ER9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R39",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr4_saisc",
        "name": "CXCR4",
        "accession": "Q8HZU0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Saimiri sciureus"
    },
    {
        "entry_name": "lgr5_xentr",
        "name": "LGR5",
        "accession": "F7D3V9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR5",
        "endogenous_ligands": [],
        "species": "Xenopus tropicalis"
    },
    {
        "entry_name": "acm4_mouse",
        "name": "M<sub>4</sub> receptor",
        "accession": "P32211",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ada1a_cavpo",
        "name": "&alpha;<sub>1A</sub>-adrenoceptor",
        "accession": "Q9WU25",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "crfr1_macmu",
        "name": "CRF<sub>1</sub> receptor",
        "accession": "Q76LL8",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "oprd_mouse",
        "name": "&delta; receptor",
        "accession": "P32300",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&delta; receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ffar1_mesau",
        "name": "FFA1 receptor",
        "accession": "Q76JU8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA1 receptor",
        "endogenous_ligands": [],
        "species": "Mesocricetus auratus"
    },
    {
        "entry_name": "fzd5_xenla",
        "name": "FZD<sub>5</sub>",
        "accession": "P58421",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>5</sub>",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "cxcr2_gorgo",
        "name": "CXCR2",
        "accession": "Q28422",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "opsd_leoke",
        "name": "Rhodopsin",
        "accession": "Q90373",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Leocottus kesslerii"
    },
    {
        "entry_name": "aa1r_ponab",
        "name": "A<sub>1</sub> receptor",
        "accession": "Q5RF57",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo abelii"
    },
    {
        "entry_name": "cxcr1_macmu",
        "name": "CXCR1",
        "accession": "Q2YEG0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "ta2r5_ponpy",
        "name": "TAS2R5",
        "accession": "Q645U0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R5",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "5ht2a_mouse",
        "name": "5-HT<sub>2A</sub> receptor",
        "accession": "P35363",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pth1r_ponab",
        "name": "PTH1 receptor",
        "accession": "Q5RAQ1",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [],
        "species": "Pongo abelii"
    },
    {
        "entry_name": "cxcr4_chlae",
        "name": "CXCR4",
        "accession": "Q9TSQ8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "gpr15_pantr",
        "name": "GPR15",
        "accession": "Q9BG77",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR15",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "lpar1_rat",
        "name": "LPA<sub>1</sub> receptor",
        "accession": "P61794",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "agrf3_mouse",
        "name": "ADGRF3",
        "accession": "Q58Y75",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "acm2_caeel",
        "name": "M<sub>2</sub> receptor",
        "accession": "Q09388",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Caenorhabditis elegans"
    },
    {
        "entry_name": "ts1r2_pantr",
        "name": "TAS1R2",
        "accession": "A3QNZ8",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ntr2_caeel",
        "name": "NTS<sub>2</sub> receptor",
        "accession": "O62169",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neurotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NTS<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Caenorhabditis elegans"
    },
    {
        "entry_name": "mshr_ovimo",
        "name": "MC<sub>1</sub> receptor",
        "accession": "P56447",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovibos moschatus"
    },
    {
        "entry_name": "mshr_lemca",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864F4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Lemur catta"
    },
    {
        "entry_name": "fpr3_macmu",
        "name": "FPR3",
        "accession": "P79191",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR3",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "gp174_mouse",
        "name": "GPR174",
        "accession": "Q3U507",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR174",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r60_macmu",
        "name": "TAS2R60",
        "accession": "Q645S2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R60",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "smo_drome",
        "name": "SMO",
        "accession": "P91682",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "SMO",
        "endogenous_ligands": [],
        "species": "Drosophila melanogaster"
    },
    {
        "entry_name": "mchr1_macmu",
        "name": "MCH<sub>1</sub> receptor",
        "accession": "Q8MJ89",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanin-concentrating hormone",
        "ligand_type": "Peptide receptors",
        "subfamily": "MCH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "nk1r_canlf",
        "name": "NK<sub>1</sub> receptor",
        "accession": "Q5DUB3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "acm4_rat",
        "name": "M<sub>4</sub> receptor",
        "accession": "P08485",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ackr1_sapap",
        "name": "ACKR1",
        "accession": "Q95LF4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Sapajus apella"
    },
    {
        "entry_name": "gp183_bovin",
        "name": "GPR183",
        "accession": "Q1RMI1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR183",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "t2r50_papha",
        "name": "TAS2R50",
        "accession": "Q646G2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R50",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "mshr_caphi",
        "name": "MC<sub>1</sub> receptor",
        "accession": "P56444",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Capra hircus"
    },
    {
        "entry_name": "galr2_rat",
        "name": "GAL<sub>2</sub> receptor",
        "accession": "O08726",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "oprm_bovin",
        "name": "&mu; receptor",
        "accession": "P79350",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&mu; receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht6r_mouse",
        "name": "5-HT<sub>6</sub> receptor",
        "accession": "Q9R1C8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r20_papha",
        "name": "TAS2R20",
        "accession": "Q646G1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R20",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "lshr_pig",
        "name": "LH receptor",
        "accession": "P16582",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "LH receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "opsd_letca",
        "name": "Rhodopsin",
        "accession": "P22671",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Lethenteron camtschaticum"
    },
    {
        "entry_name": "mrgx2_rhibe",
        "name": "MRGPRX2",
        "accession": "Q4QXU2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [],
        "species": "Rhinopithecus bieti"
    },
    {
        "entry_name": "cx3c1_bovin",
        "name": "CX<sub>3</sub>CR1",
        "accession": "A6QNL7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CX<sub>3</sub>CR1",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "hrh2_pantr",
        "name": "H<sub>2</sub> receptor",
        "accession": "P60021",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "opsd_litpi",
        "name": "Rhodopsin",
        "accession": "P31355",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Lithobates pipiens"
    },
    {
        "entry_name": "ada1b_mouse",
        "name": "&alpha;<sub>1B</sub>-adrenoceptor",
        "accession": "P97717",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1B</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ghsr_mouse",
        "name": "ghrelin receptor",
        "accession": "Q99P50",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Ghrelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ghrelin receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_ponab",
        "name": "CCR5",
        "accession": "P61756",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Pongo abelii"
    },
    {
        "entry_name": "opsd_allsu",
        "name": "Rhodopsin",
        "accession": "Q17094",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Alloteuthis subulata"
    },
    {
        "entry_name": "agra2_danre",
        "name": "ADGRA2",
        "accession": "E7FBY6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRA",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRA2",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "mshr_chaba",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q80SS9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Chaetodipus baileyi"
    },
    {
        "entry_name": "cckar_xenla",
        "name": "CCK<sub>1</sub> receptor",
        "accession": "P70031",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "hrh2_canlf",
        "name": "H<sub>2</sub> receptor",
        "accession": "P17124",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "opn4_phosu",
        "name": "OPN4",
        "accession": "Q5XXP2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN4",
        "endogenous_ligands": [],
        "species": "Phodopus sungorus"
    },
    {
        "entry_name": "ada1d_rabit",
        "name": "&alpha;<sub>1D</sub>-adrenoceptor",
        "accession": "O02666",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1D</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "hrh1_pantr",
        "name": "H<sub>1</sub> receptor",
        "accession": "Q9N2B2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gpc5d_mouse",
        "name": "GPRC5D",
        "accession": "Q9JIL6",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5D",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "vipr1_pig",
        "name": "VPAC<sub>1</sub> receptor",
        "accession": "Q28992",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "gp132_mouse",
        "name": "GPR132",
        "accession": "Q9Z282",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR132",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht5b_mouse",
        "name": "5HT5B",
        "accession": "P31387",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>5B</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_alcaa",
        "name": "MC<sub>1</sub> receptor",
        "accession": "P56442",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Alces alces alces"
    },
    {
        "entry_name": "5ht1b_crigr",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P46636",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cricetulus griseus"
    },
    {
        "entry_name": "par3_rat",
        "name": "PAR3",
        "accession": "Q920E1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR3",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_mulsu",
        "name": "Rhodopsin",
        "accession": "Q9YH01",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Mullus surmuletus"
    },
    {
        "entry_name": "aa3r_bovin",
        "name": "A<sub>3</sub> receptor",
        "accession": "Q0VC81",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "glp1r_mouse",
        "name": "GLP-1 receptor",
        "accession": "O35659",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GLP-1 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mc5r_pantr",
        "name": "MC<sub>5</sub> receptor",
        "accession": "Q9TT23",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "agrl1_bovin",
        "name": "ADGRL1",
        "accession": "O97831",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL1",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "s1pr1_bovin",
        "name": "S1P<sub>1</sub> receptor",
        "accession": "Q5E9P3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "t2r60_ponpy",
        "name": "TAS2R60",
        "accession": "Q645U7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R60",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "ednra_rat",
        "name": "ET<sub>A</sub> receptor",
        "accession": "P26684",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ts1r2_ponpy",
        "name": "TAS1R2",
        "accession": "A3QP00",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "t2r19_panpa",
        "name": "TAS2R19",
        "accession": "Q5Y4Z5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R19",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "ccr7_mouse",
        "name": "CCR7",
        "accession": "P47774",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR7",
        "endogenous_ligands": [
            {
                "name": "CCL19"
            },
            {
                "name": "Ccl21a"
            },
            {
                "name": "Ccl21b"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "sucr1_mouse",
        "name": "succinate receptor",
        "accession": "Q99MT6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Succinate receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "succinate receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mrgrf_mouse",
        "name": "MRGPRF",
        "accession": "Q8VCJ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRF",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ox1r_mouse",
        "name": "OX<sub>1</sub> receptor",
        "accession": "P58307",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fpr1_macmu",
        "name": "FPR1",
        "accession": "P79189",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR1",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "opsd_sarti",
        "name": "Rhodopsin",
        "accession": "P79911",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sargocentron tiere"
    },
    {
        "entry_name": "ednra_canlf",
        "name": "ET<sub>A</sub> receptor",
        "accession": "Q5KSU9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "ptafr_rat",
        "name": "PAF receptor",
        "accession": "P46002",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Platelet-activating factor receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "PAF receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "nk1r_litct",
        "name": "NK<sub>1</sub> receptor",
        "accession": "Q98982",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Lithobates catesbeianus"
    },
    {
        "entry_name": "c5ar1_gorgo",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P79175",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "opsd_cheau",
        "name": "Rhodopsin",
        "accession": "Q9YGZ6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Chelon auratus"
    },
    {
        "entry_name": "agrl4_rat",
        "name": "ADGRL4",
        "accession": "Q9ESC1",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL4",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r20_pantr",
        "name": "TAS2R20",
        "accession": "Q646C2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R20",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "aa1r_cavpo",
        "name": "A<sub>1</sub> receptor",
        "accession": "P47745",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "ta2r1_chlae",
        "name": "TAS2R1",
        "accession": "Q8MJU6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R1",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "ta2r4_papha",
        "name": "TAS2R4",
        "accession": "Q646F1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R4",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "opsd_sepof",
        "name": "Rhodopsin",
        "accession": "O16005",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sepia officinalis"
    },
    {
        "entry_name": "gp153_mouse",
        "name": "GPR153",
        "accession": "Q8K0Z9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR153",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht2c_canlf",
        "name": "5-HT<sub>2C</sub> receptor",
        "accession": "Q60F97",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2C</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "acm1_caeel",
        "name": "M<sub>1</sub> receptor",
        "accession": "Q18007",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Caenorhabditis elegans"
    },
    {
        "entry_name": "pe2r1_mouse",
        "name": "EP<sub>1</sub> receptor",
        "accession": "P35375",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_pig",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q9TU05",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "ta2r3_ponpy",
        "name": "TAS2R3",
        "accession": "Q645U2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R3",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "cxr4a_xenla",
        "name": "CXCR4",
        "accession": "Q9YGC3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "hrh1_gorgo",
        "name": "H<sub>1</sub> receptor",
        "accession": "Q9N2B1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "mshr_hylme",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864K7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Hylobates muelleri"
    },
    {
        "entry_name": "ccr5_macmu",
        "name": "CCR5",
        "accession": "P61813",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "brs3_sheep",
        "name": "BB<sub>3</sub> receptor",
        "accession": "O97967",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "agrg2_rat",
        "name": "ADGRG2",
        "accession": "Q8CJ11",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "calrl_rat",
        "name": "calcitonin receptor-like receptor",
        "accession": "Q63118",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "calcitonin receptor-like receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "fzd7_xentr",
        "name": "FZD<sub>7</sub>",
        "accession": "Q5BL72",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>7</sub>",
        "endogenous_ligands": [],
        "species": "Xenopus tropicalis"
    },
    {
        "entry_name": "tr140_rat",
        "name": "TAS2R31",
        "accession": "Q67ES0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R31",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ts1r3_pantr",
        "name": "TAS1R3",
        "accession": "Q717C2",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R3",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gpr6_rat",
        "name": "GPR6",
        "accession": "P51651",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR6",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ta2r5_papha",
        "name": "TAS2R5",
        "accession": "Q646E6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R5",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "kissr_rat",
        "name": "kisspeptin receptor",
        "accession": "Q924U1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Kisspeptin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "kisspeptin receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opn4_rutru",
        "name": "OPN4",
        "accession": "Q6XL69",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN4",
        "endogenous_ligands": [],
        "species": "Rutilus rutilus"
    },
    {
        "entry_name": "fzd6_canlf",
        "name": "FZD<sub>6</sub>",
        "accession": "Q8WMU5",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>6</sub>",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gp173_danre",
        "name": "GPR173",
        "accession": "Q9I918",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR173",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "lshr_bovin",
        "name": "LH receptor",
        "accession": "Q28005",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "LH receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gpr61_mouse",
        "name": "GPR61",
        "accession": "Q8C010",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR61",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht4r_mouse",
        "name": "5-HT<sub>4</sub> receptor",
        "accession": "P97288",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsb_oryla",
        "name": "OPN1SW",
        "accession": "P87365",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Oryzias latipes"
    },
    {
        "entry_name": "mshr_pantr",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q9TUK4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "adrb2_mouse",
        "name": "&beta;<sub>2</sub>-adrenoceptor",
        "accession": "P18762",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>2</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "lt4r1_mouse",
        "name": "BLT<sub>1</sub> receptor",
        "accession": "O88855",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "BLT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r16_papha",
        "name": "TAS2R16",
        "accession": "Q646E7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R16",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "gabr2_mouse",
        "name": "GABA<sub>B2</sub>",
        "accession": "Q80T41",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B2</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cxcr4_pantr",
        "name": "CXCR4",
        "accession": "P61072",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gpc5c_bovin",
        "name": "GPRC5C",
        "accession": "Q2YDG0",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5C",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gpr15_chlae",
        "name": "GPR15",
        "accession": "O18982",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR15",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "t2r14_papha",
        "name": "TAS2R14",
        "accession": "Q646F4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R14",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "ta2r_chlae",
        "name": "TP receptor",
        "accession": "P56486",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "TP receptor",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "opsb_mouse",
        "name": "OPN1SW",
        "accession": "P51491",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "aa1r_canlf",
        "name": "A<sub>1</sub> receptor",
        "accession": "P11616",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "hrh4_mouse",
        "name": "H<sub>4</sub> receptor",
        "accession": "Q91ZY2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_saioe",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864H0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Saimiri oerstedii"
    },
    {
        "entry_name": "ta2r4_ponpy",
        "name": "TAS2R4",
        "accession": "Q645U4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R4",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "v2r_bovin",
        "name": "V<sub>2</sub> receptor",
        "accession": "P48044",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "mam2_schpo",
        "name": "STE2",
        "accession": "Q00619",
        "receptor_class": "Class D1 (Ste2-like fungal pheromone)",
        "receptor_family": "STE2",
        "ligand_type": "Ste2-like receptors",
        "subfamily": "STE2",
        "endogenous_ligands": [],
        "species": "Schizosaccharomyces pombe"
    },
    {
        "entry_name": "c5ar1_rabit",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "Q9TUE1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "tshr_bovin",
        "name": "TSH receptor",
        "accession": "Q27987",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "TSH receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ada1a_mouse",
        "name": "&alpha;<sub>1A</sub>-adrenoceptor",
        "accession": "P97718",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_alosa",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864G4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Alouatta sara"
    },
    {
        "entry_name": "acm2_bovin",
        "name": "M<sub>2</sub> receptor",
        "accession": "P41985",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "agrf4_mouse",
        "name": "ADGRF4",
        "accession": "Q9D2L6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRF",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRF4",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_pig",
        "name": "Rhodopsin",
        "accession": "O18766",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "opsg_odovi",
        "name": "OPN1MW",
        "accession": "O18911",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Odocoileus virginianus virginianus"
    },
    {
        "entry_name": "adrb2_tsctr",
        "name": "&beta;<sub>2</sub>-adrenoceptor",
        "accession": "Q4KWL2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>2</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Tscherskia triton"
    },
    {
        "entry_name": "oprk_mouse",
        "name": "&kappa; receptor",
        "accession": "P33534",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&kappa; receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin A-(1-8)"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fshr_bovin",
        "name": "FSH receptor",
        "accession": "P35376",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "nk3r_mouse",
        "name": "NK<sub>3</sub> receptor",
        "accession": "P47937",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "hemokinin 1"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin A"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "neurokinin B"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            },
            {
                "name": "substance P"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oprm_pantr",
        "name": "&mu; receptor",
        "accession": "Q5IS39",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&mu; receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "adrb1_melga",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "P07700",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Meleagris gallopavo"
    },
    {
        "entry_name": "mshr_atepa",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864G7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ateles paniscus"
    },
    {
        "entry_name": "agrg6_mouse",
        "name": "ADGRG6",
        "accession": "Q6F3F9",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG6",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ada1a_rabit",
        "name": "&alpha;<sub>1A</sub>-adrenoceptor",
        "accession": "O02824",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "acm1_pig",
        "name": "M<sub>1</sub> receptor",
        "accession": "P04761",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "cxr4b_xenla",
        "name": "CXCR4",
        "accession": "Q7ZXJ7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "ffar2_mouse",
        "name": "FFA2 receptor",
        "accession": "Q8VCK6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA2 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "npy1r_rat",
        "name": "Y<sub>1</sub> receptor",
        "accession": "P21555",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsr_caphi",
        "name": "OPN1LW",
        "accession": "Q95170",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Capra hircus"
    },
    {
        "entry_name": "smo_rat",
        "name": "SMO",
        "accession": "P97698",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "SMO",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ta2r_mouse",
        "name": "TP receptor",
        "accession": "P30987",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "TP receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsb_rat",
        "name": "OPN1SW",
        "accession": "Q63652",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ssr5_mouse",
        "name": "SST5 receptor",
        "accession": "O08858",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST5 receptor",
        "endogenous_ligands": [
            {
                "name": "cortistatin-14"
            },
            {
                "name": "cortistatin-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "hcar2_mouse",
        "name": "HCA<sub>2</sub> receptor",
        "accession": "Q9EP66",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Hydroxycarboxylic acid receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "HCA<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&beta;-D-hydroxybutyric acid"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gabr1_mouse",
        "name": "GABA<sub>B1</sub>",
        "accession": "Q9WV18",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B1</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ackr1_macmu",
        "name": "ACKR1",
        "accession": "Q95LF2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "p2ry1_rat",
        "name": "P2Y<sub>1</sub> receptor",
        "accession": "P49651",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pth2r_mouse",
        "name": "PTH2 receptor",
        "accession": "Q91V95",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH2 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r20_panpa",
        "name": "TAS2R20",
        "accession": "Q646E3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R20",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "opsd_apime",
        "name": "Rhodopsin",
        "accession": "Q17053",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Apis mellifera"
    },
    {
        "entry_name": "ts1r3_rat",
        "name": "TAS1R3",
        "accession": "Q923K1",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R3",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd1_carau",
        "name": "D<sub>1</sub> receptor",
        "accession": "P35406",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Carassius auratus"
    },
    {
        "entry_name": "opsd_zosop",
        "name": "Rhodopsin",
        "accession": "Q9YGY9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Zosterisessor ophiocephalus"
    },
    {
        "entry_name": "taar1_rat",
        "name": "TA<sub>1</sub> receptor",
        "accession": "Q923Y9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Trace amine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "TA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&beta;-phenylethylamine"
            },
            {
                "name": "3-iodothyronamine"
            },
            {
                "name": "tyramine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "c5ar1_mouse",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P30993",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_traph",
        "name": "CCR5",
        "accession": "O97879",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Trachypithecus phayrei"
    },
    {
        "entry_name": "5ht7r_xenla",
        "name": "5-HT<sub>7</sub> receptor",
        "accession": "Q91559",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>7</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "cltr2_pig",
        "name": "CysLT<sub>2</sub> receptor",
        "accession": "Q95N03",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "bkrb1_chlae",
        "name": "B<sub>1</sub> receptor",
        "accession": "Q95L01",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "mshr_vulvu",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q29154",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Vulpes vulpes"
    },
    {
        "entry_name": "ffar1_mouse",
        "name": "FFA1 receptor",
        "accession": "Q76JU9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA1 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht1b_horse",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "Q0EAB5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "drd1_didvi",
        "name": "D<sub>1</sub> receptor",
        "accession": "P42288",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Didelphis virginiana"
    },
    {
        "entry_name": "t2r43_macmu",
        "name": "TAS2R43",
        "accession": "Q645T3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R43",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "mshr_micad",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864H9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mico argentatus"
    },
    {
        "entry_name": "pe2r3_mouse",
        "name": "EP<sub>3</sub> receptor",
        "accession": "P30557",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pe2r3_pig",
        "name": "EP<sub>3</sub> receptor",
        "accession": "P50131",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "aa1r_rabit",
        "name": "A<sub>1</sub> receptor",
        "accession": "P34970",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "bkrb2_pig",
        "name": "B<sub>2</sub> receptor",
        "accession": "Q9GLX8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "mshr_varrb",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864F8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Varecia rubra"
    },
    {
        "entry_name": "opsd_batmu",
        "name": "Rhodopsin",
        "accession": "O42300",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Batrachocottus multiradiatus"
    },
    {
        "entry_name": "grm8_mouse",
        "name": "mGlu<sub>8</sub> receptor",
        "accession": "P47743",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>8</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r41_ponpy",
        "name": "TAS2R41",
        "accession": "Q645U6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "t2r19_gorgo",
        "name": "TAS2R19",
        "accession": "Q645Z9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R19",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "t2r42_papha",
        "name": "TAS2R42",
        "accession": "Q646G3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R42",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "hrh1_bovin",
        "name": "H<sub>1</sub> receptor",
        "accession": "P30546",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "fzd7_mouse",
        "name": "FZD<sub>7</sub>",
        "accession": "Q61090",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>7</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agrl3_rat",
        "name": "ADGRL3",
        "accession": "Q9Z173",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL3",
        "endogenous_ligands": [
            {
                "name": "FLRT3"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ts1r2_mouse",
        "name": "TAS1R2",
        "accession": "Q925I4",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ts1r3_mouse",
        "name": "TAS1R3",
        "accession": "Q925D8",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "drd2_mouse",
        "name": "D<sub>2</sub> receptor",
        "accession": "P61168",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gnrhr_trivu",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "Q9TTI8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Trichosurus vulpecula"
    },
    {
        "entry_name": "ccr5_nasla",
        "name": "CCR5",
        "accession": "Q95NC7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Nasalis larvatus"
    },
    {
        "entry_name": "pf2r_mouse",
        "name": "FP receptor",
        "accession": "P43117",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FP receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp107_mouse",
        "name": "GPR107",
        "accession": "Q8BUV8",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR107",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "p2ry8_chick",
        "name": "P2RY8",
        "accession": "Q5ZI82",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "P2RY8",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "opsd_paggo",
        "name": "Rhodopsin",
        "accession": "O62795",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Pagophilus groenlandicus"
    },
    {
        "entry_name": "ackr1_pantr",
        "name": "ACKR1",
        "accession": "Q95LF3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ccr8_macmu",
        "name": "CCR8",
        "accession": "O97665",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR8",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "5ht1b_pantr",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P60020",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "agtr2_sheep",
        "name": "AT<sub>2</sub> receptor",
        "accession": "Q28929",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "rai3_mouse",
        "name": "GPRC5A",
        "accession": "Q8BHL4",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5A",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ts1r2_saisc",
        "name": "TAS1R2",
        "accession": "A3QP08",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Saimiri sciureus"
    },
    {
        "entry_name": "opsd_sphsp",
        "name": "Rhodopsin",
        "accession": "P35362",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sphodromantis sp."
    },
    {
        "entry_name": "taar6_rat",
        "name": "TAAR6",
        "accession": "Q923Y5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR6",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "vipr1_rat",
        "name": "VPAC<sub>1</sub> receptor",
        "accession": "P30083",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "VIP"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PACAP-27"
            },
            {
                "name": "PHV"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr1_ponpy",
        "name": "CXCR1",
        "accession": "Q2YEF9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "acm1_mouse",
        "name": "M<sub>1</sub> receptor",
        "accession": "P12657",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agtra_mouse",
        "name": "AT<sub>1</sub> receptor",
        "accession": "P29754",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_bufbu",
        "name": "Rhodopsin",
        "accession": "P56514",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Bufo bufo"
    },
    {
        "entry_name": "taar1_pantr",
        "name": "TA<sub>1</sub> receptor",
        "accession": "Q5QD29",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Trace amine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "TA<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ccr5_cerga",
        "name": "CCR5",
        "accession": "Q9TV49",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Cercocebus galeritus"
    },
    {
        "entry_name": "mshr_macsl",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864J7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca silenus"
    },
    {
        "entry_name": "agrg1_rat",
        "name": "ADGRG1",
        "accession": "Q8K3V3",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gper1_macmu",
        "name": "GPER",
        "accession": "F7EQ49",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Estrogen (G protein-coupled) receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPER",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "hrh2_gorgo",
        "name": "H<sub>2</sub> receptor",
        "accession": "Q76MS7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "pkr1_rat",
        "name": "PKR<sub>1</sub>",
        "accession": "Q8R416",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prokineticin receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "PKR<sub>1</sub>",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_taubu",
        "name": "Rhodopsin",
        "accession": "O42466",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Taurulus bubalis"
    },
    {
        "entry_name": "opsd_neoau",
        "name": "Rhodopsin",
        "accession": "P79809",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Neoniphon aurolineatus"
    },
    {
        "entry_name": "gpr18_rat",
        "name": "GPR18",
        "accession": "A1A5S3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR18",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "p2ry4_rat",
        "name": "P2Y<sub>4</sub> receptor",
        "accession": "O35811",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "ATP"
            },
            {
                "name": "UTP"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ts1r2_macmu",
        "name": "TAS1R2",
        "accession": "A3QP01",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R2",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "mshr_colgu",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864J0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Colobus guereza"
    },
    {
        "entry_name": "bkrb1_macmu",
        "name": "B<sub>1</sub> receptor",
        "accession": "Q8HZP2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "oprm_rat",
        "name": "&mu; receptor",
        "accession": "P33535",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&mu; receptor",
        "endogenous_ligands": [
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "nk1r_mouse",
        "name": "NK<sub>1</sub> receptor",
        "accession": "P30548",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ts1r1_mouse",
        "name": "TAS1R1",
        "accession": "Q99PG6",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r43_panpa",
        "name": "TAS2R43",
        "accession": "Q5Y500",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R43",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "gpr34_gorgo",
        "name": "GPR34",
        "accession": "Q6XCF2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR34",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "drd4_muspf",
        "name": "D<sub>4</sub> receptor",
        "accession": "Q6TLJ0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mustela putorius furo"
    },
    {
        "entry_name": "ta2r3_rat",
        "name": "TAS2R3",
        "accession": "Q67ET7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R3",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "agrl1_mouse",
        "name": "ADGRL1",
        "accession": "Q80TR1",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "npy2r_macmu",
        "name": "Y<sub>2</sub> receptor",
        "accession": "Q9GK74",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "t2r41_rat",
        "name": "TAS2R41",
        "accession": "Q9JKE7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "npy2r_cavpo",
        "name": "Y<sub>2</sub> receptor",
        "accession": "Q9Z2D5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "cnr1_targr",
        "name": "CB<sub>1</sub> receptor",
        "accession": "Q9PUI7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Taricha granulosa"
    },
    {
        "entry_name": "adrb2_pig",
        "name": "&beta;<sub>2</sub>-adrenoceptor",
        "accession": "Q28997",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>2</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "npsr1_macmu",
        "name": "NPS receptor",
        "accession": "Q56H79",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide S receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPS receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "crfr1_mouse",
        "name": "CRF<sub>1</sub> receptor",
        "accession": "P35347",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "grm5_rat",
        "name": "mGlu<sub>5</sub> receptor",
        "accession": "P31424",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "aa3r_mouse",
        "name": "A<sub>3</sub> receptor",
        "accession": "Q61618",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd3_xenla",
        "name": "FZD<sub>3</sub>",
        "accession": "O42579",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>3</sub>",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "mrgx2_macmu",
        "name": "MRGPRX2",
        "accession": "Q4QXU5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "hcar2_rat",
        "name": "HCA<sub>2</sub> receptor",
        "accession": "Q80Z39",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Hydroxycarboxylic acid receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "HCA<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "nk2r_mesau",
        "name": "NK<sub>2</sub> receptor",
        "accession": "P51144",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mesocricetus auratus"
    },
    {
        "entry_name": "gp157_mouse",
        "name": "GPR157",
        "accession": "Q8C206",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR157",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_leofu",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864H4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Leontocebus fuscicollis"
    },
    {
        "entry_name": "gp149_mouse",
        "name": "GPR149",
        "accession": "Q3UVY1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR149",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_mouse",
        "name": "CCR5",
        "accession": "P51682",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cxcr6_cerat",
        "name": "CXCR6",
        "accession": "Q9N0Z0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR6",
        "endogenous_ligands": [],
        "species": "Cercocebus atys"
    },
    {
        "entry_name": "cxcr6_chlae",
        "name": "CXCR6",
        "accession": "O18983",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR6",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "gpr75_mouse",
        "name": "GPR75",
        "accession": "Q6X632",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR75",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "v1ar_micma",
        "name": "V<sub>1A</sub> receptor",
        "accession": "Q9WTV8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Microtus montanus"
    },
    {
        "entry_name": "5ht2c_rat",
        "name": "5-HT<sub>2C</sub> receptor",
        "accession": "P08909",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2C</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "5-hydroxytryptamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_proml",
        "name": "Rhodopsin",
        "accession": "O16020",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Procambarus milleri"
    },
    {
        "entry_name": "acm3_bovin",
        "name": "M<sub>3</sub> receptor",
        "accession": "P41984",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gabr1_rat",
        "name": "GABA<sub>B1</sub>",
        "accession": "Q9Z0U4",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B1</sub>",
        "endogenous_ligands": [
            {
                "name": "GABA"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ta2r5_pantr",
        "name": "TAS2R5",
        "accession": "Q646A4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R5",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "grm4_mouse",
        "name": "mGlu<sub>4</sub> receptor",
        "accession": "Q68EF4",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oprk_rat",
        "name": "&kappa; receptor",
        "accession": "P34975",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&kappa; receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "&alpha;-neoendorphin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Leu]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "[Met]enkephalin"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A-(1-13)"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin A"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "dynorphin B"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            },
            {
                "name": "&beta;-neoendorphin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd1_bovin",
        "name": "D<sub>1</sub> receptor",
        "accession": "Q95136",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ccr5_semen",
        "name": "CCR5",
        "accession": "P61757",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Semnopithecus entellus"
    },
    {
        "entry_name": "cxcr2_pantr",
        "name": "CXCR2",
        "accession": "Q28807",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "npy2r_bovin",
        "name": "Y<sub>2</sub> receptor",
        "accession": "P79113",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "tr106_rat",
        "name": "TAS2R19",
        "accession": "Q67ET1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R19",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "fpr3_gorgo",
        "name": "FPR3",
        "accession": "P79178",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR3",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "p2y14_bovin",
        "name": "P2Y<sub>14</sub> receptor",
        "accession": "Q3SX17",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>14</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "prlhr_mouse",
        "name": "PrRP receptor",
        "accession": "Q6VMN6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prolactin-releasing peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PrRP receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agrl4_mouse",
        "name": "ADGRL4",
        "accession": "Q923X1",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL4",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "hcar1_mouse",
        "name": "HCA<sub>1</sub> receptor",
        "accession": "Q8C131",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Hydroxycarboxylic acid receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "HCA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-lactic acid"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "bkrb2_mouse",
        "name": "B<sub>2</sub> receptor",
        "accession": "P32299",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "[des-Arg<sup>9</sup>]bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_entdo",
        "name": "Rhodopsin",
        "accession": "P09241",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Enteroctopus dofleini"
    },
    {
        "entry_name": "lpar1_bovin",
        "name": "LPA<sub>1</sub> receptor",
        "accession": "Q28031",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "oprm_macmu",
        "name": "&mu; receptor",
        "accession": "Q9MYW9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&mu; receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "opsd_crigr",
        "name": "Rhodopsin",
        "accession": "P28681",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cricetulus griseus"
    },
    {
        "entry_name": "cxcr1_gorgo",
        "name": "CXCR1",
        "accession": "P55919",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "par1_mouse",
        "name": "PAR1",
        "accession": "P30558",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r31_gorgo",
        "name": "TAS2R31",
        "accession": "Q645Z6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R31",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "mrgre_rat",
        "name": "MRGPRE",
        "accession": "Q7TN40",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRE",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "v2r_canlf",
        "name": "V<sub>2</sub> receptor",
        "accession": "O77808",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gabr2_caeel",
        "name": "GABA<sub>B2</sub>",
        "accession": "G5ECB2",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B2</sub>",
        "endogenous_ligands": [],
        "species": "Caenorhabditis elegans"
    },
    {
        "entry_name": "ffar1_rat",
        "name": "FFA1 receptor",
        "accession": "Q8K3T4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA1 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_abyko",
        "name": "Rhodopsin",
        "accession": "O42294",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Abyssocottus korotneffi"
    },
    {
        "entry_name": "adrb2_bovin",
        "name": "&beta;<sub>2</sub>-adrenoceptor",
        "accession": "Q28044",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>2</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "agrg2_mouse",
        "name": "ADGRG2",
        "accession": "Q8CJ12",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agre4_mouse",
        "name": "ADGRE4P",
        "accession": "Q91ZE5",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE4P",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cckar_canlf",
        "name": "CCK<sub>1</sub> receptor",
        "accession": "Q5D0K2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "p2ry6_mouse",
        "name": "P2Y<sub>6</sub> receptor",
        "accession": "Q9ERK9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpbar_mouse",
        "name": "GPBA receptor",
        "accession": "Q80SS6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bile acid receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPBA receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr26_mouse",
        "name": "GPR26",
        "accession": "Q8BZA7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR26",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ackr2_mouse",
        "name": "ACKR2",
        "accession": "O08707",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ada2a_pig",
        "name": "&alpha;<sub>2A</sub>-adrenoceptor",
        "accession": "P18871",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "tr119_mouse",
        "name": "TAS2R19",
        "accession": "Q9JKT2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R19",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp183_mouse",
        "name": "GPR183",
        "accession": "Q3U6B2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR183",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r50_ponpy",
        "name": "TAS2R50",
        "accession": "Q645V7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R50",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "prlhr_rat",
        "name": "PrRP receptor",
        "accession": "Q64121",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prolactin-releasing peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PrRP receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr4_xentr",
        "name": "CXCR4",
        "accession": "Q07FZ4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Xenopus tropicalis"
    },
    {
        "entry_name": "calcr_pig",
        "name": "CT receptor",
        "accession": "P25117",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CT receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "c3ar_rat",
        "name": "C3a receptor",
        "accession": "O55197",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C3a receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "npy4r_rat",
        "name": "Y<sub>4</sub> receptor",
        "accession": "Q63447",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "neuropeptide Y"
            },
            {
                "name": "pancreatic polypeptide"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "peptide YY"
            },
            {
                "name": "PYY-(3-36)"
            },
            {
                "name": "PYY-(3-36)"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_rante",
        "name": "Rhodopsin",
        "accession": "P56516",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Rana temporaria"
    },
    {
        "entry_name": "pkr1_bovin",
        "name": "PKR<sub>1</sub>",
        "accession": "Q8SPN2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prokineticin receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "PKR<sub>1</sub>",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "grm2_rat",
        "name": "mGlu<sub>2</sub> receptor",
        "accession": "P31421",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "L-glutamic acid"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "5ht2c_pantr",
        "name": "5-HT<sub>2C</sub> receptor",
        "accession": "Q5IS66",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2C</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ccr3_macfa",
        "name": "CCR3",
        "accession": "Q9BDS8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "opsd_dipvu",
        "name": "Rhodopsin",
        "accession": "Q9YH04",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Diplodus vulgaris"
    },
    {
        "entry_name": "opsd_neoar",
        "name": "Rhodopsin",
        "accession": "P79808",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Neoniphon argenteus"
    },
    {
        "entry_name": "gp157_rat",
        "name": "GPR157",
        "accession": "Q5FVG1",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR157",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "par2_bovin",
        "name": "PAR2",
        "accession": "Q2HJA4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR2",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "grm1_caeel",
        "name": "mGlu<sub>1</sub> receptor",
        "accession": "Q09630",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Caenorhabditis elegans"
    },
    {
        "entry_name": "ta2r9_ponpy",
        "name": "TAS2R9",
        "accession": "Q645V9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R9",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "trhr_mouse",
        "name": "TRH<sub>1</sub> receptor",
        "accession": "P21761",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Thyrotropin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "TRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr12_rat",
        "name": "GPR12",
        "accession": "P30951",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR12",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_mesbi",
        "name": "Rhodopsin",
        "accession": "O62793",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Mesoplodon bidens"
    },
    {
        "entry_name": "opsd_sarmi",
        "name": "Rhodopsin",
        "accession": "P79901",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sargocentron microstoma"
    },
    {
        "entry_name": "opsd_batni",
        "name": "Rhodopsin",
        "accession": "O42301",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Batrachocottus nikolskii"
    },
    {
        "entry_name": "p2ry2_rat",
        "name": "P2Y<sub>2</sub> receptor",
        "accession": "P41232",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "lgr4_rat",
        "name": "LGR4",
        "accession": "Q9Z2H4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR4",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pkr2_mouse",
        "name": "PKR<sub>2</sub>",
        "accession": "Q8K458",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prokineticin receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "PKR<sub>2</sub>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_papha",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864J2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "mtr1a_sheep",
        "name": "MT<sub>1</sub> receptor",
        "accession": "P48040",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melatonin",
        "ligand_type": "Melatonin receptors",
        "subfamily": "MT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "tr143_mouse",
        "name": "TAS2R43",
        "accession": "Q7TQB9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R43",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cckar_mouse",
        "name": "CCK<sub>1</sub> receptor",
        "accession": "O08786",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "trhr_bovin",
        "name": "TRH<sub>1</sub> receptor",
        "accession": "O46639",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Thyrotropin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "TRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "agrl3_bovin",
        "name": "ADGRL3",
        "accession": "O97827",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL3",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ta2r4_rat",
        "name": "TAS2R4",
        "accession": "Q67ET0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R4",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "taar4_mouse",
        "name": "TAAR4",
        "accession": "Q5QD15",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "<i>TAAR4P</i>",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "nmur2_mouse",
        "name": "NMU2 receptor",
        "accession": "Q8BZ39",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuromedin U receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NMU2 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr19_mouse",
        "name": "GPR19",
        "accession": "Q61121",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR19",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r39_mouse",
        "name": "TAS2R39",
        "accession": "Q7TQA5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R39",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "tr114_rat",
        "name": "TAS2R5",
        "accession": "Q9JKT8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R5",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "celr3_mouse",
        "name": "CELSR3",
        "accession": "Q91ZI0",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRC",
        "ligand_type": "Adhesion receptors",
        "subfamily": "CELSR3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ssr2_bovin",
        "name": "SST2 receptor",
        "accession": "P34993",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST2 receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ta2r4_mouse",
        "name": "TAS2R4",
        "accession": "Q9JKT3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R4",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "aa3r_sheep",
        "name": "A<sub>3</sub> receptor",
        "accession": "P35342",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "ccr3_canlf",
        "name": "CCR3",
        "accession": "Q64H34",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "mrgrd_macfa",
        "name": "MRGPRD",
        "accession": "Q6L786",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRD",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "aa2ar_horse",
        "name": "A<sub>2A</sub> receptor",
        "accession": "Q6TLI7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "gper1_danre",
        "name": "GPER",
        "accession": "B3G515",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Estrogen (G protein-coupled) receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPER",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "par2_mouse",
        "name": "PAR2",
        "accession": "P55086",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp139_mouse",
        "name": "GPR139",
        "accession": "Q80UC8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR139",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsr_psafa",
        "name": "OPN1LW",
        "accession": "P22332",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Psalidodon fasciatus"
    },
    {
        "entry_name": "acm5_pantr",
        "name": "M<sub>5</sub> receptor",
        "accession": "Q5IS53",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "agrg1_gorgo",
        "name": "ADGRG1",
        "accession": "Q50DM6",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG1",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "gasr_pig",
        "name": "CCK<sub>2</sub> receptor",
        "accession": "A0A287A2K5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "calrl_xenla",
        "name": "calcitonin receptor-like receptor",
        "accession": "Q7ZXS8",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "calcitonin receptor-like receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "ta2r1_gorgo",
        "name": "TAS2R1",
        "accession": "Q646G7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R1",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "mshr_galse",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864F9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Galago senegalensis"
    },
    {
        "entry_name": "ackr3_canlf",
        "name": "ACKR3",
        "accession": "P11613",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR3",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "fshr_sheep",
        "name": "FSH receptor",
        "accession": "P35379",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "c5ar1_ponpy",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "P79234",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "ta2r1_ponpy",
        "name": "TAS2R1",
        "accession": "Q646G6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R1",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "aa2ar_canlf",
        "name": "A<sub>2A</sub> receptor",
        "accession": "P11617",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "cxcr2_mouse",
        "name": "CXCR2",
        "accession": "P35343",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cx3c1_rat",
        "name": "CX<sub>3</sub>CR1",
        "accession": "P35411",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CX<sub>3</sub>CR1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "5ht1a_rat",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "P19327",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_ceras",
        "name": "CCR5",
        "accession": "Q9TV48",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Cercopithecus ascanius"
    },
    {
        "entry_name": "opsd_ictpu",
        "name": "Rhodopsin",
        "accession": "O42268",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Ictalurus punctatus"
    },
    {
        "entry_name": "mshr_panon",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q865E8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Panthera onca"
    },
    {
        "entry_name": "npsr1_mouse",
        "name": "NPS receptor",
        "accession": "Q8BZP8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide S receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPS receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "adrb3_bovin",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "P46626",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "pe2r4_bovin",
        "name": "EP<sub>4</sub> receptor",
        "accession": "Q8MJ08",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "tshr_rat",
        "name": "TSH receptor",
        "accession": "P21463",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "TSH receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_danre",
        "name": "Rhodopsin",
        "accession": "P35359",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "ffar3_mouse",
        "name": "FFA3 receptor",
        "accession": "Q3UFD7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA3 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "c5ar1_cavpo",
        "name": "C5a<sub>1</sub> receptor",
        "accession": "O70129",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C5a<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "opsg_scica",
        "name": "OPN1MW",
        "accession": "O35478",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Sciurus carolinensis"
    },
    {
        "entry_name": "drd2_chlae",
        "name": "D<sub>2</sub> receptor",
        "accession": "P52702",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "mc4r_danre",
        "name": "MC<sub>4</sub> receptor",
        "accession": "B0V1P1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "ednrb_mouse",
        "name": "ET<sub>B</sub> receptor",
        "accession": "P48302",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ox2r_pig",
        "name": "OX<sub>2</sub> receptor",
        "accession": "O62809",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "smo_mouse",
        "name": "SMO",
        "accession": "P56726",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "SMO",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cxcr1_rat",
        "name": "CXCR1",
        "accession": "P70612",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r46_macmu",
        "name": "TAS2R46",
        "accession": "Q645T4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R46",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "pf2r_rat",
        "name": "FP receptor",
        "accession": "P43118",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FP receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd2_pantr",
        "name": "D<sub>2</sub> receptor",
        "accession": "P60026",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "t2r41_papha",
        "name": "TAS2R41",
        "accession": "Q646F3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "lpar3_rat",
        "name": "LPA<sub>3</sub> receptor",
        "accession": "Q8K5E0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r10_pantr",
        "name": "TAS2R10",
        "accession": "Q646B5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R10",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ada1a_oryla",
        "name": "&alpha;<sub>1A</sub>-adrenoceptor",
        "accession": "Q91175",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Oryzias latipes"
    },
    {
        "entry_name": "gpr15_macne",
        "name": "GPR15",
        "accession": "P56412",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR15",
        "endogenous_ligands": [],
        "species": "Macaca nemestrina"
    },
    {
        "entry_name": "gpr4_mouse",
        "name": "GPR4",
        "accession": "Q8BUD0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR4",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agtr1_cavpo",
        "name": "AT<sub>1</sub> receptor",
        "accession": "Q9WV26",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "opsd_psafa",
        "name": "Rhodopsin",
        "accession": "P41590",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Psalidodon fasciatus"
    },
    {
        "entry_name": "opsd_phovi",
        "name": "Rhodopsin",
        "accession": "O62794",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Phoca vitulina"
    },
    {
        "entry_name": "c3ar_ponab",
        "name": "C3a receptor",
        "accession": "Q5REI5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C3a receptor",
        "endogenous_ligands": [],
        "species": "Pongo abelii"
    },
    {
        "entry_name": "ccr5_cercp",
        "name": "CCR5",
        "accession": "Q9TV47",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Cercopithecus cephus"
    },
    {
        "entry_name": "gpr34_pantr",
        "name": "GPR34",
        "accession": "P60019",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR34",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "brs3_mouse",
        "name": "BB<sub>3</sub> receptor",
        "accession": "O54798",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr4_rat",
        "name": "GPR4",
        "accession": "Q4KLH9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR4",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pth1r_mouse",
        "name": "PTH1 receptor",
        "accession": "P41593",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp135_mouse",
        "name": "GPR135",
        "accession": "Q7TQP2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR135",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr3_macmu",
        "name": "CCR3",
        "accession": "P56483",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "ccr5_symsy",
        "name": "CCR5",
        "accession": "Q95NC5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Symphalangus syndactylus"
    },
    {
        "entry_name": "t2r39_panpa",
        "name": "TAS2R39",
        "accession": "Q646C8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R39",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "opsr_xenla",
        "name": "OPN1LW",
        "accession": "O12948",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "opsd_scyca",
        "name": "Rhodopsin",
        "accession": "O93459",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Scyliorhinus canicula"
    },
    {
        "entry_name": "npy5r_canlf",
        "name": "Y<sub>5</sub> receptor",
        "accession": "O62729",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "cltr2_mouse",
        "name": "CysLT<sub>2</sub> receptor",
        "accession": "Q920A1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_sarpi",
        "name": "Rhodopsin",
        "accession": "Q9YGZ0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sardina pilchardus"
    },
    {
        "entry_name": "opsd_petma",
        "name": "Rhodopsin",
        "accession": "Q98980",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Petromyzon marinus"
    },
    {
        "entry_name": "casr_bovin",
        "name": "CaS receptor",
        "accession": "P35384",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Calcium-sensing receptors",
        "ligand_type": "Ion receptors",
        "subfamily": "CaS receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht1a_vulvu",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q6XXY0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Vulpes vulpes"
    },
    {
        "entry_name": "gp119_mouse",
        "name": "GPR119",
        "accession": "Q7TQP3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR119",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ccr5_cerat",
        "name": "CCR5",
        "accession": "O62743",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Cercocebus atys"
    },
    {
        "entry_name": "ur2r_bovin",
        "name": "UT receptor",
        "accession": "P49220",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Urotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "UT receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht2a_bovin",
        "name": "5-HT<sub>2A</sub> receptor",
        "accession": "Q75Z89",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ednrb_rabit",
        "name": "ET<sub>B</sub> receptor",
        "accession": "Q9N0W7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "galr3_mouse",
        "name": "GAL<sub>3</sub> receptor",
        "accession": "O88853",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ox1r_rat",
        "name": "OX<sub>1</sub> receptor",
        "accession": "P56718",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr88_rat",
        "name": "GPR88",
        "accession": "Q9ESP4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR88",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mrgx1_mouse",
        "name": "MRGPRX1",
        "accession": "Q8CIP3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agrg1_ponpy",
        "name": "ADGRG1",
        "accession": "Q50DM5",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG1",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "opsd_cotgr",
        "name": "Rhodopsin",
        "accession": "O42328",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cottocomephorus grewingkii"
    },
    {
        "entry_name": "ox2r_canlf",
        "name": "OX<sub>2</sub> receptor",
        "accession": "Q9TUP7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "pth1r_didvi",
        "name": "PTH1 receptor",
        "accession": "P25107",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [],
        "species": "Didelphis virginiana"
    },
    {
        "entry_name": "taar3_rat",
        "name": "TAAR3",
        "accession": "Q5QD24",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR3",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr2_bovin",
        "name": "CXCR2",
        "accession": "Q28003",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR2",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "opsg_cavpo",
        "name": "OPN1MW",
        "accession": "Q9R024",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "gp149_chick",
        "name": "GPR149",
        "accession": "Q9DDD1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR149",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "s1pr1_danre",
        "name": "S1P<sub>1</sub> receptor",
        "accession": "Q9DDK4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "mrgx2_macfa",
        "name": "MRGPRX2",
        "accession": "Q5U9D9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "npsr1_rat",
        "name": "NPS receptor",
        "accession": "P0C0L6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide S receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPS receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr22_mouse",
        "name": "GPR22",
        "accession": "Q8BZL4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR22",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ta2r8_panpa",
        "name": "TAS2R8",
        "accession": "Q646E5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R8",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "gpr55_mouse",
        "name": "GPR55",
        "accession": "Q3UJF0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "GPR18, GPR55 and GPR119",
        "ligand_type": "Lipid receptors",
        "subfamily": "GPR55",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd8_rat",
        "name": "FZD<sub>8</sub>",
        "accession": "Q498S8",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>8</sub>",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "aa2br_mouse",
        "name": "A<sub>2B</sub> receptor",
        "accession": "Q60614",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pi2r_rat",
        "name": "IP receptor",
        "accession": "P43253",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "IP receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr35_mouse",
        "name": "GPR35",
        "accession": "Q9ES90",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR35",
        "endogenous_ligands": [
            {
                "name": "kynurenic acid"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r14_macmu",
        "name": "TAS2R14",
        "accession": "Q645T2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R14",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "ada2a_cavpo",
        "name": "&alpha;<sub>2A</sub>-adrenoceptor",
        "accession": "Q60474",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "opsd_limbe",
        "name": "Rhodopsin",
        "accession": "O42427",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Limnocottus bergianus"
    },
    {
        "entry_name": "cxcr4_mouse",
        "name": "CXCR4",
        "accession": "P70658",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "grpr_rat",
        "name": "BB<sub>2</sub> receptor",
        "accession": "P52500",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            },
            {
                "name": "neuromedin B"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opn5_mouse",
        "name": "OPN5",
        "accession": "Q6VZZ7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN5",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oxgr1_rat",
        "name": "oxoglutarate receptor",
        "accession": "Q6Y1R5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Oxoglutarate receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "oxoglutarate receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "npy5r_pig",
        "name": "Y<sub>5</sub> receptor",
        "accession": "O97969",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "opn4a_danre",
        "name": "OPN4",
        "accession": "Q2KNE5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN4",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "cltr1_rat",
        "name": "CysLT<sub>1</sub> receptor",
        "accession": "Q924T8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "lgr4_danre",
        "name": "LGR4",
        "accession": "E7FE13",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR4",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "grm6_mouse",
        "name": "mGlu<sub>6</sub> receptor",
        "accession": "Q5NCH9",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ta2r1_pantr",
        "name": "TAS2R1",
        "accession": "Q646H0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R1",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ccr5_chlae",
        "name": "CCR5",
        "accession": "P56493",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Chlorocebus aethiops"
    },
    {
        "entry_name": "tr105_rat",
        "name": "TAS2R9",
        "accession": "Q9JKT5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R9",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gp158_bovin",
        "name": "GPR158",
        "accession": "E1BBQ2",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR158",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gp107_rat",
        "name": "GPR107",
        "accession": "D3ZWZ9",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR107",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr33_mouse",
        "name": "GPR33",
        "accession": "O88416",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR33",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "adrb3_felca",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "Q9TST4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Felis catus"
    },
    {
        "entry_name": "ccr5_nomle",
        "name": "CCR5",
        "accession": "O97883",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Nomascus leucogenys"
    },
    {
        "entry_name": "ffar4_rat",
        "name": "FFA4 receptor",
        "accession": "Q2AC31",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA4 receptor",
        "endogenous_ligands": [
            {
                "name": "&alpha;-linolenic acid"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "par1_rat",
        "name": "PAR1",
        "accession": "P26824",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_sardi",
        "name": "Rhodopsin",
        "accession": "P79898",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Sargocentron diadema"
    },
    {
        "entry_name": "gpr4_bovin",
        "name": "GPR4",
        "accession": "Q1JQB3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR4",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "c3ar_mouse",
        "name": "C3a receptor",
        "accession": "O09047",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Complement peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "C3a receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd4_chick",
        "name": "FZD<sub>4</sub>",
        "accession": "Q9IA05",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>4</sub>",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "cxcr4_macmu",
        "name": "CXCR4",
        "accession": "P79394",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "pe2r2_rat",
        "name": "EP<sub>2</sub> receptor",
        "accession": "Q62928",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "rl3r2_mouse",
        "name": "RXFP4",
        "accession": "Q7TQP4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP4",
        "endogenous_ligands": [
            {
                "name": "INSL5"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cxcr6_macfa",
        "name": "CXCR6",
        "accession": "Q9BDS6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR6",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "pe2r1_rat",
        "name": "EP<sub>1</sub> receptor",
        "accession": "P70597",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ada1a_rat",
        "name": "&alpha;<sub>1A</sub>-adrenoceptor",
        "accession": "P43140",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>1A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ssr3_mouse",
        "name": "SST3 receptor",
        "accession": "P30935",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST3 receptor",
        "endogenous_ligands": [
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_bovin",
        "name": "MC<sub>1</sub> receptor",
        "accession": "P47798",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "lgr5_rat",
        "name": "LGR5",
        "accession": "D4AC13",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "LGR5",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mshr_tracr",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864I6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Trachypithecus cristatus"
    },
    {
        "entry_name": "agrb2_ponab",
        "name": "ADGRB2",
        "accession": "Q5R7Y0",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB2",
        "endogenous_ligands": [],
        "species": "Pongo abelii"
    },
    {
        "entry_name": "adrb3_sheep",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "Q9XT58",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "t2r46_gorgo",
        "name": "TAS2R46",
        "accession": "Q645Z7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R46",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "t2r38_papha",
        "name": "TAS2R38",
        "accession": "Q646E9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "mshr_erypa",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864K3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Erythrocebus patas"
    },
    {
        "entry_name": "5ht1f_cavpo",
        "name": "5-HT<sub>1F</sub> receptor",
        "accession": "O08890",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1F</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "ta2r3_mouse",
        "name": "TAS2R3",
        "accession": "Q7TQA7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr87_mouse",
        "name": "GPR87",
        "accession": "Q99MT7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR87",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "hrh1_cavpo",
        "name": "H<sub>1</sub> receptor",
        "accession": "P31389",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "calrl_oncgo",
        "name": "calcitonin receptor-like receptor",
        "accession": "Q8AXU4",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "calcitonin receptor-like receptor",
        "endogenous_ligands": [],
        "species": "Oncorhynchus gorbuscha"
    },
    {
        "entry_name": "mshr_vulla",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q6A155",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Vulpes lagopus"
    },
    {
        "entry_name": "cltr1_mouse",
        "name": "CysLT<sub>1</sub> receptor",
        "accession": "Q99JA4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r41_panpa",
        "name": "TAS2R41",
        "accession": "Q646C7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "acm5_rat",
        "name": "M<sub>5</sub> receptor",
        "accession": "P08911",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr3_caphi",
        "name": "CXCR3",
        "accession": "Q867B2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR3",
        "endogenous_ligands": [],
        "species": "Capra hircus"
    },
    {
        "entry_name": "gabr2_rat",
        "name": "GABA<sub>B2</sub>",
        "accession": "O88871",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "GABA<sub>B</sub> receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "GABA<sub>B2</sub>",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pf2r_bovin",
        "name": "FP receptor",
        "accession": "P37289",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FP receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "galr2_mouse",
        "name": "GAL<sub>2</sub> receptor",
        "accession": "O88854",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ssr4_mouse",
        "name": "SST4 receptor",
        "accession": "P49660",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST4 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsg_gekge",
        "name": "OPN1MW",
        "accession": "P35358",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Gekko gecko"
    },
    {
        "entry_name": "tpra1_rat",
        "name": "TPRA1",
        "accession": "Q791F6",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TPRA1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "npy2r_chick",
        "name": "Y<sub>2</sub> receptor",
        "accession": "Q9DDN6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "sucr1_rat",
        "name": "succinate receptor",
        "accession": "Q6IYF9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Succinate receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "succinate receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_bovin",
        "name": "CCR5",
        "accession": "Q2HJ17",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "mshr_hapgr",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864F5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Hapalemur griseus"
    },
    {
        "entry_name": "acthr_sheep",
        "name": "MC<sub>2</sub> receptor",
        "accession": "Q9TU77",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "agrb3_mouse",
        "name": "ADGRB3",
        "accession": "Q80ZF8",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRB",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRB3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr85_danre",
        "name": "GPR85",
        "accession": "Q9I919",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR85",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "gp161_mouse",
        "name": "GPR161",
        "accession": "B2RPY5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR161",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oxyr_pig",
        "name": "OT receptor",
        "accession": "P32306",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OT receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "cnr2_rat",
        "name": "CB<sub>2</sub> receptor",
        "accession": "Q9QZN9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "adrb3_macmu",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "Q28524",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "acm1_macmu",
        "name": "M<sub>1</sub> receptor",
        "accession": "P56489",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "t2r14_panpa",
        "name": "TAS2R14",
        "accession": "Q646D9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R14",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "agrl2_bovin",
        "name": "ADGRL2",
        "accession": "O97817",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRL",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRL2",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "mshr_sagoe",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864H2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Saguinus oedipus"
    },
    {
        "entry_name": "pth1r_rat",
        "name": "PTH1 receptor",
        "accession": "P25961",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Parathyroid hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PTH1 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "p2ry6_rat",
        "name": "P2Y<sub>6</sub> receptor",
        "accession": "Q63371",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "trhr_rat",
        "name": "TRH<sub>1</sub> receptor",
        "accession": "Q01717",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Thyrotropin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "TRH<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            },
            {
                "name": "TRH"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "s1pr5_mouse",
        "name": "S1P<sub>5</sub> receptor",
        "accession": "Q91X56",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>5</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fshr_mesau",
        "name": "FSH receptor",
        "accession": "Q6R6L8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Mesocricetus auratus"
    },
    {
        "entry_name": "trhr_sheep",
        "name": "TRH<sub>1</sub> receptor",
        "accession": "Q28596",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Thyrotropin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "TRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "cxcr1_pantr",
        "name": "CXCR1",
        "accession": "P55920",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gpr3_rat",
        "name": "GPR3",
        "accession": "Q8K1Q3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR3",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "nk2r_cavpo",
        "name": "NK<sub>2</sub> receptor",
        "accession": "Q64077",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "hrh3_rat",
        "name": "H<sub>3</sub> receptor",
        "accession": "Q9QYN8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "acthr_bovin",
        "name": "MC<sub>2</sub> receptor",
        "accession": "P34974",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "adrb1_xenla",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "O42574",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "tshr_sheep",
        "name": "TSH receptor",
        "accession": "P56495",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "TSH receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "ccrl2_bovin",
        "name": "CCRL2",
        "accession": "Q0II78",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCRL2",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ta2r7_ponpy",
        "name": "TAS2R7",
        "accession": "Q645V8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "mrgre_mouse",
        "name": "MRGPRE",
        "accession": "Q91ZB7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRE",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "npbw2_bovin",
        "name": "NPBW2 receptor",
        "accession": "Q8MJV2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide W/neuropeptide B receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NPBW2 receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "t2r40_pantr",
        "name": "TAS2R40",
        "accession": "Q646B1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R40",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "5ht2b_drome",
        "name": "5-HT<sub>2B</sub> receptor",
        "accession": "P28286",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Drosophila melanogaster"
    },
    {
        "entry_name": "gnrhr_pig",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "P49922",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "ackr3_rat",
        "name": "ACKR3",
        "accession": "O89039",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR3",
        "endogenous_ligands": [
            {
                "name": "adrenomedullin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "pe2r3_bovin",
        "name": "EP<sub>3</sub> receptor",
        "accession": "P34979",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "s1pr5_pig",
        "name": "S1P<sub>5</sub> receptor",
        "accession": "Q684M3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "adrb1_macmu",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "P47899",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "pe2r4_pantr",
        "name": "EP<sub>4</sub> receptor",
        "accession": "Q95KZ0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gpbar_rabit",
        "name": "GPBA receptor",
        "accession": "Q862A8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bile acid receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPBA receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "drd1_pig",
        "name": "D<sub>1</sub> receptor",
        "accession": "P50130",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "t2r42_gorgo",
        "name": "TAS2R42",
        "accession": "Q645Z3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R42",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "gper1_mouse",
        "name": "GPER",
        "accession": "Q8BMP4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Estrogen (G protein-coupled) receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPER",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ta2r3_panpa",
        "name": "TAS2R3",
        "accession": "Q646D2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R3",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "nk2r_bovin",
        "name": "NK<sub>2</sub> receptor",
        "accession": "P05363",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "cltr2_rat",
        "name": "CysLT<sub>2</sub> receptor",
        "accession": "Q924T9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr52_mouse",
        "name": "GPR52",
        "accession": "P0C5J4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR52",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_nomco",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864K6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Nomascus concolor"
    },
    {
        "entry_name": "grm6_rabit",
        "name": "mGlu<sub>6</sub> receptor",
        "accession": "Q863I4",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "fpr1_mouse",
        "name": "FPR1",
        "accession": "P33766",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "lpar1_mouse",
        "name": "LPA<sub>1</sub> receptor",
        "accession": "P61793",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r38_gorgo",
        "name": "TAS2R38",
        "accession": "Q697L4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "pe2r4_rat",
        "name": "EP<sub>4</sub> receptor",
        "accession": "P43114",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "EP<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>1</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ghrhr_mouse",
        "name": "GHRH receptor",
        "accession": "P32082",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GHRH receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_poere",
        "name": "Rhodopsin",
        "accession": "P79848",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Poecilia reticulata"
    },
    {
        "entry_name": "gpr34_panpa",
        "name": "GPR34",
        "accession": "Q3SAG9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR34",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "ghrhr_pig",
        "name": "GHRH receptor",
        "accession": "P34999",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GHRH receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "grm1_mouse",
        "name": "mGlu<sub>1</sub> receptor",
        "accession": "P97772",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "par4_rat",
        "name": "PAR4",
        "accession": "Q920E0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR4",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr3_rat",
        "name": "CXCR3",
        "accession": "Q9JII9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR3",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gp151_mouse",
        "name": "GPR151",
        "accession": "Q7TSN6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR151",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ffar3_rat",
        "name": "FFA3 receptor",
        "accession": "B2GV46",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA3 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "adrb1_canlf",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "P79148",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "cltr1_pig",
        "name": "CysLT<sub>1</sub> receptor",
        "accession": "Q95N02",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Leukotriene receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CysLT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "aa2ar_mouse",
        "name": "A<sub>2A</sub> receptor",
        "accession": "Q60613",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pkr2_bovin",
        "name": "PKR<sub>2</sub>",
        "accession": "Q8SPN1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prokineticin receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "PKR<sub>2</sub>",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "tr119_rat",
        "name": "TAS2R1",
        "accession": "Q9JKU1",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ghsr_rat",
        "name": "ghrelin receptor",
        "accession": "O08725",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Ghrelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ghrelin receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "fpr2_mouse",
        "name": "FPR2/ALX",
        "accession": "O88536",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR2/ALX",
        "endogenous_ligands": [
            {
                "name": "CRAMP"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr15_macfa",
        "name": "GPR15",
        "accession": "Q9BDS7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR15",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "gpr22_danre",
        "name": "GPR22",
        "accession": "A0A2R9YJI3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR22",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "ada2b_mouse",
        "name": "&alpha;<sub>2B</sub>-adrenoceptor",
        "accession": "P30545",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2B</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ssr1_canlf",
        "name": "SST1 receptor",
        "accession": "Q49LX5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST1 receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "opsd_athbo",
        "name": "Rhodopsin",
        "accession": "Q9YGZ1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Atherina boyeri"
    },
    {
        "entry_name": "5ht1a_mouse",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q64264",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fpr1_rabit",
        "name": "FPR1",
        "accession": "Q05394",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR1",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "bkrb2_cavpo",
        "name": "B<sub>2</sub> receptor",
        "accession": "O70526",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "ackr1_sagim",
        "name": "ACKR1",
        "accession": "Q95LF7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Saguinus imperator"
    },
    {
        "entry_name": "grm7_rat",
        "name": "mGlu<sub>7</sub> receptor",
        "accession": "P35400",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>7</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "acthr_pig",
        "name": "MC<sub>2</sub> receptor",
        "accession": "Q8HYN8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "fzd4_mouse",
        "name": "FZD<sub>4</sub>",
        "accession": "Q61088",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>4</sub>",
        "endogenous_ligands": [
            {
                "name": "norrin"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fshr_caimo",
        "name": "FSH receptor",
        "accession": "Q7ZTV5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Cairina moschata"
    },
    {
        "entry_name": "gasr_mouse",
        "name": "CCK<sub>2</sub> receptor",
        "accession": "P56481",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd2_xenla",
        "name": "FZD<sub>2</sub>",
        "accession": "Q9PUU6",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>2</sub>",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "calcr_rat",
        "name": "CT receptor",
        "accession": "P32214",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CT receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ackr1_bosin",
        "name": "ACKR1",
        "accession": "Q863H8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Bos indicus"
    },
    {
        "entry_name": "fshr_macfa",
        "name": "FSH receptor",
        "accession": "P32212",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "mshr_trafr",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864I4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Trachypithecus francoisi"
    },
    {
        "entry_name": "t2r41_mouse",
        "name": "TAS2R41",
        "accession": "P59532",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R41",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsr_oryla",
        "name": "OPN1LW",
        "accession": "P87367",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Oryzias latipes"
    },
    {
        "entry_name": "g37l1_rat",
        "name": "GPR37L1",
        "accession": "Q9QYC5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR37L1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gnrhr_canlf",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "Q9MZI6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "opsd_todpa",
        "name": "Rhodopsin",
        "accession": "P31356",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Todarodes pacificus"
    },
    {
        "entry_name": "ccr5_alllh",
        "name": "CCR5",
        "accession": "Q9XT76",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Allochrocebus lhoesti"
    },
    {
        "entry_name": "5ht1f_mouse",
        "name": "5-HT<sub>1F</sub> receptor",
        "accession": "Q02284",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1F</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r38_panpa",
        "name": "TAS2R38",
        "accession": "Q697L6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "taar3_mouse",
        "name": "TAAR3",
        "accession": "Q5QD16",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR3",
        "endogenous_ligands": [
            {
                "name": "isoamylamine"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpc5c_rat",
        "name": "GPRC5C",
        "accession": "Q3KRC4",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC5C",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsr_horse",
        "name": "OPN1LW",
        "accession": "O18912",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "opsd_macfa",
        "name": "Rhodopsin",
        "accession": "Q28886",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "cxcr4_rat",
        "name": "CXCR4",
        "accession": "O08565",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "tr107_rat",
        "name": "TAS2R10",
        "accession": "Q9JKT9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R10",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_catbo",
        "name": "Rhodopsin",
        "accession": "Q17296",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cataglyphis bombycina"
    },
    {
        "entry_name": "pacr_mouse",
        "name": "PAC<sub>1</sub> receptor",
        "accession": "P70205",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gipr_rat",
        "name": "GIP receptor",
        "accession": "P43219",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Glucagon receptor family",
        "ligand_type": "Peptide receptors",
        "subfamily": "GIP receptor",
        "endogenous_ligands": [
            {
                "name": "gastric inhibitory polypeptide"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "fpr1_gorgo",
        "name": "FPR1",
        "accession": "P79176",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR1",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "v1ar_sheep",
        "name": "V<sub>1A</sub> receptor",
        "accession": "P48043",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "fshr_pig",
        "name": "FSH receptor",
        "accession": "P49059",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "calrl_pig",
        "name": "calcitonin receptor-like receptor",
        "accession": "Q8WN93",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "calcitonin receptor-like receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "crfr1_rat",
        "name": "CRF<sub>1</sub> receptor",
        "accession": "P35353",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Corticotropin-releasing factor receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CRF<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr10_mouse",
        "name": "CCR10",
        "accession": "Q9JL21",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR10",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mchr1_mouse",
        "name": "MCH<sub>1</sub> receptor",
        "accession": "Q8JZL2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanin-concentrating hormone",
        "ligand_type": "Peptide receptors",
        "subfamily": "MCH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_otocr",
        "name": "Rhodopsin",
        "accession": "Q769E8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Otolemur crassicaudatus"
    },
    {
        "entry_name": "grm2_mouse",
        "name": "mGlu<sub>2</sub> receptor",
        "accession": "Q14BI2",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r31_papha",
        "name": "TAS2R31",
        "accession": "Q646F9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R31",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "gpbar_rat",
        "name": "GPBA receptor",
        "accession": "Q80T02",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bile acid receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPBA receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "acm5_saibb",
        "name": "M<sub>5</sub> receptor",
        "accession": "Q5IS98",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Saimiri boliviensis boliviensis"
    },
    {
        "entry_name": "ednra_bovin",
        "name": "ET<sub>A</sub> receptor",
        "accession": "P21450",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "opsr_felca",
        "name": "OPN1LW",
        "accession": "O18913",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Felis catus"
    },
    {
        "entry_name": "acm5_macmu",
        "name": "M<sub>5</sub> receptor",
        "accession": "P56490",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "oprk_bovin",
        "name": "&kappa; receptor",
        "accession": "Q2KIP6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opioid receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "&kappa; receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "bkrb1_rat",
        "name": "B<sub>1</sub> receptor",
        "accession": "P97583",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "T-kinin"
            },
            {
                "name": "T-kinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            },
            {
                "name": "bradykinin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_myrvi",
        "name": "Rhodopsin",
        "accession": "P79807",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Myripristis violacea"
    },
    {
        "entry_name": "opsd_felca",
        "name": "Rhodopsin",
        "accession": "Q95KU1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Felis catus"
    },
    {
        "entry_name": "agra2_mouse",
        "name": "ADGRA2",
        "accession": "Q91ZV8",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRA",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRA2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ta2r7_papha",
        "name": "TAS2R7",
        "accession": "Q646F6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "fshr_noteu",
        "name": "FSH receptor",
        "accession": "Q6YNB6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Notamacropus eugenii"
    },
    {
        "entry_name": "opsd_chesa",
        "name": "Rhodopsin",
        "accession": "Q9YGZ7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Chelon saliens"
    },
    {
        "entry_name": "p2ry4_mouse",
        "name": "P2Y<sub>4</sub> receptor",
        "accession": "Q9JJS7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>4</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mshr_allni",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864K5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Allenopithecus nigroviridis"
    },
    {
        "entry_name": "casr_mouse",
        "name": "CaS receptor",
        "accession": "Q9QY96",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Calcium-sensing receptors",
        "ligand_type": "Ion receptors",
        "subfamily": "CaS receptor",
        "endogenous_ligands": [
            {
                "name": "Ca<sup>2+</sup>"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "taar9_rat",
        "name": "TAAR9",
        "accession": "Q923Y6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR9",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "5ht2a_ponpy",
        "name": "5-HT<sub>2A</sub> receptor",
        "accession": "Q5R4Q6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "adrb1_pig",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "Q28998",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "ccrl2_mouse",
        "name": "CCRL2",
        "accession": "O35457",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCRL2",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r40_mouse",
        "name": "TAS2R40",
        "accession": "Q7TQB8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R40",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "galr1_rat",
        "name": "GAL<sub>1</sub> receptor",
        "accession": "Q62805",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Galanin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GAL<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "galanin"
            },
            {
                "name": "galanin"
            },
            {
                "name": "galanin-like peptide"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "bkrb1_chlpg",
        "name": "B<sub>1</sub> receptor",
        "accession": "Q8HZP3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Chlorocebus pygerythrus"
    },
    {
        "entry_name": "opsg_rat",
        "name": "OPN1MW",
        "accession": "O35476",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "nk3r_cavpo",
        "name": "NK<sub>3</sub> receptor",
        "accession": "P30098",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "agtr1_merun",
        "name": "AT<sub>1</sub> receptor",
        "accession": "O35210",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Meriones unguiculatus"
    },
    {
        "entry_name": "5ht1d_canlf",
        "name": "5-HT<sub>1D</sub> receptor",
        "accession": "P11614",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1D</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "gp158_rat",
        "name": "GPR158",
        "accession": "D4A6L0",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR158",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ts1r1_rat",
        "name": "TAS1R1",
        "accession": "Q9Z0R8",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Taste 1 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS1R1",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "tshr_mouse",
        "name": "TSH receptor",
        "accession": "P47750",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "TSH receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gp141_mouse",
        "name": "GPR141",
        "accession": "Q7TQP0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR141",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "hrh4_rat",
        "name": "H<sub>4</sub> receptor",
        "accession": "Q91ZY1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Histamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "H<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "histamine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ox2r_rat",
        "name": "OX<sub>2</sub> receptor",
        "accession": "P56719",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Orexin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OX<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ssr3_rat",
        "name": "SST3 receptor",
        "accession": "P30936",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST3 receptor",
        "endogenous_ligands": [
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-14"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            },
            {
                "name": "SRIF-28"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r50_panpa",
        "name": "TAS2R50",
        "accession": "Q646E4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R50",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "t2r43_pantr",
        "name": "TAS2R43",
        "accession": "Q646B4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R43",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "bkrb1_macfa",
        "name": "B<sub>1</sub> receptor",
        "accession": "Q3BCU0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bradykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "B<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca fascicularis"
    },
    {
        "entry_name": "5ht1a_ponpy",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q9N296",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "t2r31_pantr",
        "name": "TAS2R31",
        "accession": "Q646B9",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R31",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "mtr1a_mouse",
        "name": "MT<sub>1</sub> receptor",
        "accession": "Q61184",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melatonin",
        "ligand_type": "Melatonin receptors",
        "subfamily": "MT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_camma",
        "name": "Rhodopsin",
        "accession": "O18315",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cambarus maculatus"
    },
    {
        "entry_name": "lpar5_bovin",
        "name": "LPA<sub>5</sub> receptor",
        "accession": "Q3ZC80",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gp146_xenla",
        "name": "GPR146",
        "accession": "Q6P7G9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR146",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "v1ar_rat",
        "name": "V<sub>1A</sub> receptor",
        "accession": "P30560",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>1A</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "vasopressin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_delde",
        "name": "Rhodopsin",
        "accession": "O62791",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Delphinus delphis"
    },
    {
        "entry_name": "ccr5_rhiav",
        "name": "CCR5",
        "accession": "O97962",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Rhinopithecus avunculus"
    },
    {
        "entry_name": "mrgx3_macmu",
        "name": "MRGPRX3",
        "accession": "Q2LL16",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX3",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "grm3_ponab",
        "name": "mGlu<sub>3</sub> receptor",
        "accession": "Q5RAL3",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Metabotropic glutamate receptors",
        "ligand_type": "Amino acid receptors",
        "subfamily": "mGlu<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pongo abelii"
    },
    {
        "entry_name": "lpar6_rat",
        "name": "LPA<sub>6</sub> receptor",
        "accession": "Q4G072",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>6</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd2_bovin",
        "name": "D<sub>2</sub> receptor",
        "accession": "P20288",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "t2r39_gorgo",
        "name": "TAS2R39",
        "accession": "Q645Y7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R39",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "pd2r2_mouse",
        "name": "DP<sub>2</sub> receptor",
        "accession": "Q9Z2J6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "DP<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            },
            {
                "name": "PGE<sub>2</sub>"
            },
            {
                "name": "PGF<sub>2&alpha;</sub>"
            },
            {
                "name": "PGJ<sub>2</sub>"
            },
            {
                "name": "PGD<sub>3</sub>"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_neosa",
        "name": "Rhodopsin",
        "accession": "P79812",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Neoniphon sammara"
    },
    {
        "entry_name": "drd3_mouse",
        "name": "D<sub>3</sub> receptor",
        "accession": "P30728",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpc6a_mouse",
        "name": "GPRC6 receptor",
        "accession": "Q8K4Z6",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC6 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "s1pr1_rat",
        "name": "S1P<sub>1</sub> receptor",
        "accession": "P48303",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_gorgo",
        "name": "CCR5",
        "accession": "P56439",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "ta2r7_panpa",
        "name": "TAS2R7",
        "accession": "Q646D6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "gp143_mouse",
        "name": "GPR143",
        "accession": "P70259",
        "receptor_class": "Other GPCRs",
        "receptor_family": "Other GPCR orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR143",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "drd5_rat",
        "name": "D<sub>5</sub> receptor",
        "accession": "P25115",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mas_mouse",
        "name": "MAS1",
        "accession": "P30554",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MAS1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "agtr2_rat",
        "name": "AT<sub>2</sub> receptor",
        "accession": "P35351",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "mshr_miota",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864K4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Miopithecus talapoin"
    },
    {
        "entry_name": "aa1r_bovin",
        "name": "A<sub>1</sub> receptor",
        "accession": "P28190",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "opsd_procl",
        "name": "Rhodopsin",
        "accession": "P35356",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Procambarus clarkii"
    },
    {
        "entry_name": "agrg5_mouse",
        "name": "ADGRG5",
        "accession": "Q3V3Z3",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRG",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRG5",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_loxaf",
        "name": "Rhodopsin",
        "accession": "Q68J47",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Loxodonta africana"
    },
    {
        "entry_name": "mrgrf_rat",
        "name": "MRGPRF",
        "accession": "P23749",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRF",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "5ht2b_mouse",
        "name": "5-HT<sub>2B</sub> receptor",
        "accession": "Q02152",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>2B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "taar1_mouse",
        "name": "TA<sub>1</sub> receptor",
        "accession": "Q923Y8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Trace amine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "TA<sub>1</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "&beta;-phenylethylamine"
            },
            {
                "name": "3-iodothyronamine"
            },
            {
                "name": "tyramine"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "mrgx2_gorgo",
        "name": "MRGPRX2",
        "accession": "Q4QXU0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRX2",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "cml2_rat",
        "name": "chemerin receptor 2",
        "accession": "P46090",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemerin receptor",
        "ligand_type": "Protein receptors",
        "subfamily": "chemerin receptor 2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ta2r8_gorgo",
        "name": "TAS2R8",
        "accession": "Q646A3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R8",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "taar1_macmu",
        "name": "TA<sub>1</sub> receptor",
        "accession": "Q8HZ64",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Trace amine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "TA<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "s1pr2_mouse",
        "name": "S1P<sub>2</sub> receptor",
        "accession": "P52592",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "sphingosine 1-phosphate"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ada2b_rat",
        "name": "&alpha;<sub>2B</sub>-adrenoceptor",
        "accession": "P19328",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2B</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_saisc",
        "name": "CCR5",
        "accession": "Q8HZT9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Saimiri sciureus"
    },
    {
        "entry_name": "gpr88_mouse",
        "name": "GPR88",
        "accession": "Q9EPB7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR88",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gper1_rat",
        "name": "GPER",
        "accession": "O08878",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Estrogen (G protein-coupled) receptors",
        "ligand_type": "Steroid receptors",
        "subfamily": "GPER",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_pygne",
        "name": "CCR5",
        "accession": "O97882",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Pygathrix nemaeus"
    },
    {
        "entry_name": "npy2r_pantr",
        "name": "Y<sub>2</sub> receptor",
        "accession": "Q5IS62",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neuropeptide Y receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "Y<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "fshr_chick",
        "name": "FSH receptor",
        "accession": "P79763",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "fpr3_pantr",
        "name": "FPR3",
        "accession": "P79243",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Formylpeptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "FPR3",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ntr2_rat",
        "name": "NTS<sub>2</sub> receptor",
        "accession": "Q63384",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Neurotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NTS<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "neuromedin N"
            },
            {
                "name": "neuromedin N"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            },
            {
                "name": "neurotensin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "opsd_cotbo",
        "name": "Rhodopsin",
        "accession": "O42307",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cottinella boulengeri"
    },
    {
        "entry_name": "ccr5_chltn",
        "name": "CCR5",
        "accession": "Q95NE8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Chlorocebus tantalus"
    },
    {
        "entry_name": "agtr1_bovin",
        "name": "AT<sub>1</sub> receptor",
        "accession": "P25104",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "pacr_bovin",
        "name": "PAC<sub>1</sub> receptor",
        "accession": "Q29627",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "qrfpr_brafl",
        "name": "QRFP receptor",
        "accession": "C3ZQF9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Peptide P518 receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "QRFP receptor",
        "endogenous_ligands": [],
        "species": "Branchiostoma floridae"
    },
    {
        "entry_name": "ackr1_saibb",
        "name": "ACKR1",
        "accession": "Q95LF5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR1",
        "endogenous_ligands": [],
        "species": "Saimiri boliviensis boliviensis"
    },
    {
        "entry_name": "5ht5b_rat",
        "name": "5HT5B",
        "accession": "P35365",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>5B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "adrb1_mouse",
        "name": "&beta;<sub>1</sub>-adrenoceptor",
        "accession": "P34971",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>1</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht1b_rabit",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P49144",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ackr2_rat",
        "name": "ACKR2",
        "accession": "O09027",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "ACKR2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "oxyr_bovin",
        "name": "OT receptor",
        "accession": "P56449",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OT receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "ccr9_sheep",
        "name": "CCR9",
        "accession": "Q1WLP9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR9",
        "endogenous_ligands": [],
        "species": "Ovis aries"
    },
    {
        "entry_name": "tr105_mouse",
        "name": "TAS2R5",
        "accession": "Q9JKT4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R5",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r40_panpa",
        "name": "TAS2R40",
        "accession": "Q646D4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R40",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "adrb2_rat",
        "name": "&beta;<sub>2</sub>-adrenoceptor",
        "accession": "P10608",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>2</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "cxcr4_pig",
        "name": "CXCR4",
        "accession": "Q764M9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR4",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "t2r30_panpa",
        "name": "TAS2R30",
        "accession": "Q646E2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R30",
        "endogenous_ligands": [],
        "species": "Pan paniscus"
    },
    {
        "entry_name": "ccr5_macar",
        "name": "CCR5",
        "accession": "O97975",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Macaca arctoides"
    },
    {
        "entry_name": "cxcr1_hooho",
        "name": "CXCR1",
        "accession": "Q2YEG2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Hoolock hoolock"
    },
    {
        "entry_name": "cx3c1_mouse",
        "name": "CX<sub>3</sub>CR1",
        "accession": "Q9Z0D9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CX<sub>3</sub>CR1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cckar_cavpo",
        "name": "CCK<sub>1</sub> receptor",
        "accession": "Q63931",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "cnr1_xenla",
        "name": "CB<sub>1</sub> receptor",
        "accession": "Q801M1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cannabinoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "CB<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "opsd_galml",
        "name": "Rhodopsin",
        "accession": "O93441",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Galeus melastomus"
    },
    {
        "entry_name": "opsr_carau",
        "name": "OPN1LW",
        "accession": "P32313",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1LW",
        "endogenous_ligands": [],
        "species": "Carassius auratus"
    },
    {
        "entry_name": "oxyr_rat",
        "name": "OT receptor",
        "accession": "P70536",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OT receptor",
        "endogenous_ligands": [
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            },
            {
                "name": "oxytocin"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r60_pantr",
        "name": "TAS2R60",
        "accession": "Q646A5",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R60",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "mshr_alopi",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864G1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Alouatta pigra"
    },
    {
        "entry_name": "opsd_myrbe",
        "name": "Rhodopsin",
        "accession": "P79798",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Myripristis berndti"
    },
    {
        "entry_name": "ta2r7_gorgo",
        "name": "TAS2R7",
        "accession": "Q646A2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "nk2r_rabit",
        "name": "NK<sub>2</sub> receptor",
        "accession": "P79218",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Tachykinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "NK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ccr5_mansp",
        "name": "CCR5",
        "accession": "Q95ND1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Mandrillus sphinx"
    },
    {
        "entry_name": "opsg_chick",
        "name": "OPN1MW",
        "accession": "P28683",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1MW",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "ssr2_pig",
        "name": "SST2 receptor",
        "accession": "P34994",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Somatostatin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "SST2 receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "fzd1_chick",
        "name": "FZD<sub>1</sub>",
        "accession": "O57328",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>1</sub>",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "t2r38_rat",
        "name": "TAS2R38",
        "accession": "Q4VHE7",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "casr_pig",
        "name": "CaS receptor",
        "accession": "O62714",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Calcium-sensing receptors",
        "ligand_type": "Ion receptors",
        "subfamily": "CaS receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "v2r_rat",
        "name": "V<sub>2</sub> receptor",
        "accession": "Q00788",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "V<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr39_mouse",
        "name": "GPR39",
        "accession": "Q5U431",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR39",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "ada2c_cavpo",
        "name": "&alpha;<sub>2C</sub>-adrenoceptor",
        "accession": "Q60476",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2C</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "fzd1_rat",
        "name": "FZD<sub>1</sub>",
        "accession": "Q08463",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>1</sub>",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ccr5_rhibe",
        "name": "CCR5",
        "accession": "O97880",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR5",
        "endogenous_ligands": [],
        "species": "Rhinopithecus bieti"
    },
    {
        "entry_name": "ada2c_danre",
        "name": "&alpha;<sub>2C</sub>-adrenoceptor",
        "accession": "Q90WY6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2C</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "acm3_chick",
        "name": "M<sub>3</sub> receptor",
        "accession": "P49578",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "vipr_carau",
        "name": "VPAC<sub>1</sub> receptor",
        "accession": "Q90308",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "VIP and PACAP receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "VPAC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Carassius auratus"
    },
    {
        "entry_name": "agrd1_mouse",
        "name": "ADGRD1",
        "accession": "Q80T32",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRD",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRD1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oxgr1_mouse",
        "name": "oxoglutarate receptor",
        "accession": "Q6IYF8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Oxoglutarate receptors",
        "ligand_type": "Alicarboxylic acid receptors",
        "subfamily": "oxoglutarate receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "aa2br_chick",
        "name": "A<sub>2B</sub> receptor",
        "accession": "O13076",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gallus gallus"
    },
    {
        "entry_name": "s1pr2_danre",
        "name": "S1P<sub>2</sub> receptor",
        "accession": "Q9I8K8",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (S1P) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "S1P<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "ada2c_mouse",
        "name": "&alpha;<sub>2C</sub>-adrenoceptor",
        "accession": "Q01337",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2C</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "gpr39_pig",
        "name": "GPR39",
        "accession": "B2ZHY2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR39",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "gnrhr_horse",
        "name": "GnRH<sub>1</sub> receptor",
        "accession": "O18821",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Gonadotrophin-releasing hormone receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "GnRH<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "ta2r7_pantr",
        "name": "TAS2R7",
        "accession": "Q646C4",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R7",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "t2r60_gorgo",
        "name": "TAS2R60",
        "accession": "Q645Z0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R60",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "gpr31_mouse",
        "name": "GPR31",
        "accession": "F8VQN3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR31",
        "endogenous_ligands": [
            {
                "name": "12S-HETE"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_dipan",
        "name": "Rhodopsin",
        "accession": "Q9YH05",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Diplodus annularis"
    },
    {
        "entry_name": "taar6_pantr",
        "name": "TAAR6",
        "accession": "Q5W8W0",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "TAAR6",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "ta2r3_papha",
        "name": "TAS2R3",
        "accession": "Q646E8",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R3",
        "endogenous_ligands": [],
        "species": "Papio hamadryas"
    },
    {
        "entry_name": "ada2c_rat",
        "name": "&alpha;<sub>2C</sub>-adrenoceptor",
        "accession": "P22086",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2C</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd5_xenla",
        "name": "D<sub>5</sub> receptor",
        "accession": "P42290",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>5</sub> receptor",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "t2r38_mouse",
        "name": "TAS2R38",
        "accession": "Q7TQA6",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "aa2br_rabit",
        "name": "A<sub>2B</sub> receptor",
        "accession": "Q32ZE2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "ccr3_mouse",
        "name": "CCR3",
        "accession": "P51678",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CCR3",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "par1_crilo",
        "name": "PAR1",
        "accession": "Q00991",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR1",
        "endogenous_ligands": [],
        "species": "Cricetulus longicaudatus"
    },
    {
        "entry_name": "aa2ar_cavpo",
        "name": "A<sub>2A</sub> receptor",
        "accession": "P46616",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>2A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cavia porcellus"
    },
    {
        "entry_name": "lshr_mouse",
        "name": "LH receptor",
        "accession": "P30730",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "LH receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "pi2r_bovin",
        "name": "IP receptor",
        "accession": "P79393",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "IP receptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "lshr_calja",
        "name": "LH receptor",
        "accession": "O02721",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "LH receptor",
        "endogenous_ligands": [],
        "species": "Callithrix jacchus"
    },
    {
        "entry_name": "agre5_bovin",
        "name": "ADGRE5",
        "accession": "Q8SQA4",
        "receptor_class": "Class B2 (Adhesion)",
        "receptor_family": "ADGRE",
        "ligand_type": "Adhesion receptors",
        "subfamily": "ADGRE5",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "gasr_canlf",
        "name": "CCK<sub>2</sub> receptor",
        "accession": "P30552",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Cholecystokinin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CCK<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "mshr_aloca",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864G3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Alouatta caraya"
    },
    {
        "entry_name": "acm3_gorgo",
        "name": "M<sub>3</sub> receptor",
        "accession": "Q9N2A3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Acetylcholine receptors (muscarinic)",
        "ligand_type": "Aminergic receptors",
        "subfamily": "M<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "mrgrd_rat",
        "name": "MRGPRD",
        "accession": "Q7TN41",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "MRGPRD",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ednrb_horse",
        "name": "ET<sub>B</sub> receptor",
        "accession": "O62709",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "par2_rat",
        "name": "PAR2",
        "accession": "Q63645",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Proteinase-activated receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "PAR2",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "rxfp1_mouse",
        "name": "RXFP1",
        "accession": "Q6R6I7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Relaxin family peptide receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "RXFP1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "oxyr_mouse",
        "name": "OT receptor",
        "accession": "P97926",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Vasopressin and oxytocin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "OT receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht1b_rat",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P28564",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "xcr1_mouse",
        "name": "XCR1",
        "accession": "Q9R0M1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "XCR1",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "lpar2_mouse",
        "name": "LPA<sub>2</sub> receptor",
        "accession": "Q9JL06",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd2_rat",
        "name": "FZD<sub>2</sub>",
        "accession": "Q08464",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>2</sub>",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gp83a_danre",
        "name": "GPR183",
        "accession": "A5PLE7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR183",
        "endogenous_ligands": [],
        "species": "Danio rerio"
    },
    {
        "entry_name": "t2r38_hylkl",
        "name": "TAS2R38",
        "accession": "Q697L2",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Hylobates klossii"
    },
    {
        "entry_name": "adrb3_caphi",
        "name": "&beta;<sub>3</sub>-adrenoceptor",
        "accession": "Q9XT57",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&beta;<sub>3</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Capra hircus"
    },
    {
        "entry_name": "ffar4_mouse",
        "name": "FFA4 receptor",
        "accession": "Q7TMA4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Free fatty acid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "FFA4 receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fshr_horse",
        "name": "FSH receptor",
        "accession": "P47799",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "FSH receptor",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "opsd_glome",
        "name": "Rhodopsin",
        "accession": "O62792",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Globicephala melas"
    },
    {
        "entry_name": "aa3r_rat",
        "name": "A<sub>3</sub> receptor",
        "accession": "P28647",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adenosine receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "A<sub>3</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "adenosine"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "drd2_melga",
        "name": "D<sub>2</sub> receptor",
        "accession": "O73810",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>2</sub> receptor",
        "endogenous_ligands": [],
        "species": "Meleagris gallopavo"
    },
    {
        "entry_name": "ednra_pig",
        "name": "ET<sub>A</sub> receptor",
        "accession": "Q29010",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Endothelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ET<sub>A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "pd2r2_rat",
        "name": "DP<sub>2</sub> receptor",
        "accession": "Q6XKD3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Prostanoid receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "DP<sub>2</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "PGD<sub>2</sub>"
            }
        ],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "ada2a_bovin",
        "name": "&alpha;<sub>2A</sub>-adrenoceptor",
        "accession": "Q28838",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Adrenoceptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "&alpha;<sub>2A</sub>-adrenoceptor",
        "endogenous_ligands": [],
        "species": "Bos taurus"
    },
    {
        "entry_name": "5ht1b_spaeh",
        "name": "5-HT<sub>1B</sub> receptor",
        "accession": "P56496",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1B</sub> receptor",
        "endogenous_ligands": [],
        "species": "Spalax ehrenbergi"
    },
    {
        "entry_name": "gp183_salsa",
        "name": "GPR183",
        "accession": "B5X337",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR183",
        "endogenous_ligands": [],
        "species": "Salmo salar"
    },
    {
        "entry_name": "opsb_pantr",
        "name": "OPN1SW",
        "accession": "P60015",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "OPN1SW",
        "endogenous_ligands": [],
        "species": "Pan troglodytes"
    },
    {
        "entry_name": "gpr84_mouse",
        "name": "GPR84",
        "accession": "Q8CIM5",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR84",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_camhu",
        "name": "Rhodopsin",
        "accession": "O18312",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Cambarus hubrichti"
    },
    {
        "entry_name": "ghsr_pig",
        "name": "ghrelin receptor",
        "accession": "Q95254",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Ghrelin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "ghrelin receptor",
        "endogenous_ligands": [],
        "species": "Sus scrofa"
    },
    {
        "entry_name": "mshr_cermi",
        "name": "MC<sub>1</sub> receptor",
        "accession": "Q864J9",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Melanocortin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "MC<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Cercopithecus mitis"
    },
    {
        "entry_name": "gpc6a_rat",
        "name": "GPRC6 receptor",
        "accession": "Q70VB1",
        "receptor_class": "Class C (Glutamate)",
        "receptor_family": "Class C Orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPRC6 receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "t2r38_ponpy",
        "name": "TAS2R38",
        "accession": "Q697L3",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R38",
        "endogenous_ligands": [],
        "species": "Pongo pygmaeus"
    },
    {
        "entry_name": "brs3_macmu",
        "name": "BB<sub>3</sub> receptor",
        "accession": "Q6H2Y3",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Bombesin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "BB<sub>3</sub> receptor",
        "endogenous_ligands": [],
        "species": "Macaca mulatta"
    },
    {
        "entry_name": "drd1_rat",
        "name": "D<sub>1</sub> receptor",
        "accession": "P18901",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Dopamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "D<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "gpr25_mouse",
        "name": "GPR25",
        "accession": "P0C5I1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "GPR25",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "cxcr1_rabit",
        "name": "CXCR1",
        "accession": "P21109",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Chemokine receptors",
        "ligand_type": "Protein receptors",
        "subfamily": "CXCR1",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "opsd_proor",
        "name": "Rhodopsin",
        "accession": "O18485",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Procambarus orcinus"
    },
    {
        "entry_name": "ptafr_mouse",
        "name": "PAF receptor",
        "accession": "Q62035",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Platelet-activating factor receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "PAF receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "p2ry1_mouse",
        "name": "P2Y<sub>1</sub> receptor",
        "accession": "P49650",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "t2r20_gorgo",
        "name": "TAS2R20",
        "accession": "Q646A0",
        "receptor_class": "Class T (Taste 2)",
        "receptor_family": "Taste 2 receptors",
        "ligand_type": "Sensory receptors",
        "subfamily": "TAS2R20",
        "endogenous_ligands": [],
        "species": "Gorilla gorilla gorilla"
    },
    {
        "entry_name": "lpar4_mouse",
        "name": "LPA<sub>4</sub> receptor",
        "accession": "Q8BLG2",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Lysophospholipid (LPA) receptors",
        "ligand_type": "Lipid receptors",
        "subfamily": "LPA<sub>4</sub> receptor",
        "endogenous_ligands": [
            {
                "name": "LPA"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "LYSOPHOSPHATIDIC ACID"
            },
            {
                "name": "1-O-Oleoyl-D-glycerol 3-phosphoric acid"
            }
        ],
        "species": "Mus musculus"
    },
    {
        "entry_name": "5ht1a_horse",
        "name": "5-HT<sub>1A</sub> receptor",
        "accession": "Q0EAB6",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "5-Hydroxytryptamine receptors",
        "ligand_type": "Aminergic receptors",
        "subfamily": "5-HT<sub>1A</sub> receptor",
        "endogenous_ligands": [],
        "species": "Equus caballus"
    },
    {
        "entry_name": "calcr_mouse",
        "name": "CT receptor",
        "accession": "Q60755",
        "receptor_class": "Class B1 (Secretin)",
        "receptor_family": "Calcitonin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "CT receptor",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "opsd_canlf",
        "name": "Rhodopsin",
        "accession": "P32308",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Canis lupus familiaris"
    },
    {
        "entry_name": "opsd_lolfo",
        "name": "Rhodopsin",
        "accession": "P24603",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Opsins",
        "ligand_type": "Sensory receptors",
        "subfamily": "Rhodopsin",
        "endogenous_ligands": [],
        "species": "Loligo forbesii"
    },
    {
        "entry_name": "p2y13_rat",
        "name": "P2Y<sub>13</sub> receptor",
        "accession": "Q6GUG4",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "P2Y receptors",
        "ligand_type": "Nucleotide receptors",
        "subfamily": "P2Y<sub>13</sub> receptor",
        "endogenous_ligands": [],
        "species": "Rattus norvegicus"
    },
    {
        "entry_name": "agtr1_rabit",
        "name": "AT<sub>1</sub> receptor",
        "accession": "P34976",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Angiotensin receptors",
        "ligand_type": "Peptide receptors",
        "subfamily": "AT<sub>1</sub> receptor",
        "endogenous_ligands": [],
        "species": "Oryctolagus cuniculus"
    },
    {
        "entry_name": "p2y10_mouse",
        "name": "P2RY10",
        "accession": "Q8BFU7",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Class A orphans",
        "ligand_type": "Orphan receptors",
        "subfamily": "P2RY10",
        "endogenous_ligands": [],
        "species": "Mus musculus"
    },
    {
        "entry_name": "fzd1_xenla",
        "name": "FZD<sub>1</sub>",
        "accession": "Q9I9M5",
        "receptor_class": "Class F (Frizzled)",
        "receptor_family": "Frizzled",
        "ligand_type": "Protein receptors",
        "subfamily": "FZD<sub>1</sub>",
        "endogenous_ligands": [],
        "species": "Xenopus laevis"
    },
    {
        "entry_name": "tshr_ictpu",
        "name": "TSH receptor",
        "accession": "Q6QMG1",
        "receptor_class": "Class A (Rhodopsin)",
        "receptor_family": "Glycoprotein hormone receptors",