STEP 1 of 2

SELECT RECEPTORS

Select receptors in the table (below) or browse the classification tree (right). You can select entire families or individual receptors.

Once you have selected all your receptors, click the green button.

For more information on this tool, see the docs.

Species

  Receptor classification Ligands Structures G protein coupling


Class
 
Ligand type
 
Family
 
Receptor
(UniProt)
Receptor
(GtP)
Count Count PDB(s)
 
Gs
 
Gi/o
 
Gq/11
 
G12/13
 
A Aminergic 5-Hydroxytryptamine 5HT1A 5-HT1A 9409 3 7E2X,7E2Y,... - Primary - -
A Aminergic 5-Hydroxytryptamine 5HT1B 5-HT1B 1711 5 4IAQ,4IAR,... - Primary - -
A Aminergic 5-Hydroxytryptamine 5HT1D 5-HT1D 1521 1 7E32 - Primary - -
A Aminergic 5-Hydroxytryptamine 5HT1E 5-HT1E 200 1 7E33 - Primary - -
A Aminergic 5-Hydroxytryptamine 5HT1F 5-HT1F 185 1 7EXD - Primary - -
A Aminergic 5-Hydroxytryptamine 5HT2A 5-HT2A 5476 14 6A93,6A94,... - Secondary Primary -
A Aminergic 5-Hydroxytryptamine 5HT2B 5-HT2B 2189 11 4IB4,4NC3,... - - Primary -
A Aminergic 5-Hydroxytryptamine 5HT2C 5-HT2C 4322 6 6BQG,6BQH,... - Secondary Primary -
A Aminergic 5-Hydroxytryptamine 5HT4R 5-HT4 975 3 7XT8,7XT9,... Primary - - Secondary
A Aminergic 5-Hydroxytryptamine 5HT5A 5-HT5A 466 5 7UM4,7UM5,... - Primary Secondary -
A Aminergic 5-Hydroxytryptamine 5HT6R 5-HT6 4226 3 7XTB,7YS6,... Primary - Secondary -
A Aminergic 5-Hydroxytryptamine 5HT7R 5-HT7 3170 1 7XTC Primary - - -
A Aminergic Acetylcholine (muscarinic) ACM1 M1 4157 6 5CXV,6OIJ,... - - Primary -
A Aminergic Acetylcholine (muscarinic) ACM2 M2 2745 14 3UON,4MQS,... Secondary Primary Secondary -
A Aminergic Dopamine DRD2 D2 12107 6 6CM4,6LUQ,... - Primary - -
A Aminergic Acetylcholine (muscarinic) ACM3 M3 2535 9 4DAJ,4U14,... - - Primary -
A Aminergic Acetylcholine (muscarinic) ACM4 M4 1600 10 5DSG,6KP6,... - Primary - -
A Aminergic Acetylcholine (muscarinic) ACM5 M5 1140 1 6OL9 - - Primary -
A Aminergic Adrenoceptors ADA1A α1A-adrenoceptor 2523 5 7YM8,7YMH,... - - Primary Secondary
A Aminergic Adrenoceptors ADA1B α1B-adrenoceptor 1796 1 7B6W - - Primary -
A Aminergic Adrenoceptors ADA1D α1D-adrenoceptor 1896 0 - - - Primary -
A Aminergic Adrenoceptors ADA2A α2A-adrenoceptor 1229 8 6KUX,6KUY,... Secondary Primary - -
A Aminergic Adrenoceptors ADA2B α2B-adrenoceptor 717 2 6K41,6K42 Secondary Primary - -
A Aminergic Adrenoceptors ADA2C α2C-adrenoceptor 833 1 6KUW Secondary Primary - -
A Aminergic Adrenoceptors ADRB1 β1-adrenoceptor 2043 34 2VT4,2Y00,... Primary Secondary - -
A Aminergic Adrenoceptors ADRB2 β2-adrenoceptor 2613 39 2R4R,2R4S,... Primary Secondary - -
A Aminergic Adrenoceptors ADRB3 β3-adrenoceptor 1578 3 7DH5,7XJH,... Primary Secondary - -
A Aminergic Dopamine DRD1 D1 2792 20 7CKW,7CKX,... Primary - - -
A Aminergic Dopamine DRD3 D3 5898 4 3PBL,7CMU,... - Primary - -
A Aminergic Dopamine DRD4 D4 3033 4 5WIU,5WIV,... - Primary - -
A Aminergic Dopamine DRD5 D5 485 1 8IRV Primary - - -
A Aminergic Histamine HRH1 H1 2434 2 3RZE,7DFL - - Primary -
A Aminergic Histamine HRH2 H2 744 1 7UL3 Secondary - Primary -
A Aminergic Histamine HRH3 H3 5456 1 7F61 - Primary - -
A Aminergic Histamine HRH4 H4 1477 0 - - Primary - -
A Aminergic Trace amine TAAR1 TA1 2038 0 - Primary - Secondary -
A Peptide Angiotensin AGTR1 AT1 2858 7 4YAY,4ZUD,... - Primary Primary -
A Peptide Angiotensin AGTR2 AT2 931 7 5UNF,5UNG,... - Primary - -
A Peptide Apelin APJ apelin 562 8 5VBL,6KNM,... - Primary - -
A Peptide Bombesin NMBR BB1 191 1 8H0P - - Primary -
A Peptide Bombesin GRPR BB2 309 4 7W3Z,7W40,... - - Primary -
A Peptide Bombesin BRS3 BB3 324 0 - - - Primary -
A Peptide Bradykinin BKRB1 B1 873 1 7EIB - Primary Primary -
A Peptide Bradykinin BKRB2 B2 669 3 7F2O,7F6H,... Primary Primary Primary -
A Peptide Cholecystokinin CCKAR CCK1 2172 10 7EZH,7EZK,... Secondary - Primary -
A Peptide Cholecystokinin GASR CCK2 2280 4 7F8V,7F8W,... - - Primary -
A Peptide Complement peptide C3AR C3a 218 3 8HK2,8HK3,... - - - -
A Peptide Complement peptide C5AR1 C5a1 476 8 5O9H,6C1Q,... - Primary Secondary -
A Peptide Complement peptide C5AR2 C5a2 11 0 - - - - -
A Peptide Endothelin EDNRA ETA 2494 1 8HCQ - - Primary -
A Peptide Endothelin EDNRB ETB 1696 12 5GLH,5GLI,... Primary Primary Primary -
A Peptide Formylpeptide FPR1 FPR1 442 4 7EUO,7T6T,... - Primary - -
A Peptide Formylpeptide FPR2 FPR2/ALX 750 9 6LW5,6OMM,... - Primary Secondary -
A Peptide Formylpeptide FPR3 FPR3 7 0 - - Primary - -
A Peptide Galanin GALR1 GAL1 169 2 7WQ3,7XJJ - Primary - -
A Peptide Galanin GALR2 GAL2 169 4 7WQ4,7XBD,... - Secondary Primary Secondary
A Peptide Galanin GALR3 GAL3 232 0 - - Primary - -
A Peptide Ghrelin GHSR ghrelin 1918 7 6KO5,7F83,... - Secondary Primary Secondary
A Peptide Gonadotrophin-releasing hormone GNRHR GnRH1 2017 1 7BR3 - Secondary Primary -
A Peptide Kisspeptin KISSR kisspeptin 310 0 - - - Primary -
A Peptide Melanin-concentrating hormone MCHR1 MCH1 3639 0 - Primary Primary Primary -
A Peptide Melanin-concentrating hormone MCHR2 MCH2 53 0 - - - Primary -
A Peptide Melanocortin MSHR MC1 1615 4 7F4D,7F4F,... Primary - - -
A Peptide Melanocortin ACTHR MC2 8 1 8GY7 Primary - - -
A Peptide Melanocortin MC3R MC3 1393 0 - Primary - - -
A Peptide Melanocortin MC4R MC4 3525 8 6W25,7AUE,... Primary - - -
A Peptide Melanocortin MC5R MC5 1264 0 - Primary - - -
A Peptide Motilin MTLR motilin 410 2 8IBU,8IBV - - Primary Primary
A Peptide Neuromedin U NMUR1 NMU1 125 2 7W53,7W56 - - Primary -
A Peptide Neuromedin U NMUR2 NMU2 139 3 7W55,7W57,... - - Primary -
A Peptide Neuropeptide FF/neuropeptide AF NPFF1 NPFF1 148 0 - - Primary - -
A Peptide Neuropeptide FF/neuropeptide AF NPFF2 NPFF2 186 0 - - Primary - -
A Peptide Neuropeptide S NPSR1 NPS 15105 0 - Secondary - Primary -
A Peptide Neuropeptide W/neuropeptide B NPBW1 NPBW1 341 0 - - Primary - -
A Peptide Neuropeptide W/neuropeptide B NPBW2 NPBW2 4 0 - - Primary - -
A Peptide Neuropeptide Y NPY1R Y1 981 4 5ZBH,5ZBQ,... - Primary - -
A Olfactory Olfactory OR1A1 Olfactory 1A1 0 0 - - - - -
A Peptide Neuropeptide Y NPY2R Y2 825 4 7DDZ,7X9B,... - Primary Secondary -
A Peptide Neuropeptide Y NPY4R Y4 222 1 7X9C - Primary Secondary -
A Peptide Neuropeptide Y NPY5R Y5 1396 0 - - Primary - -
A Peptide Neuropeptide Y NPY6R y6 0 0 - - - - -
A Peptide Neurotensin NTR1 NTS1 620 31 3ZEV,4BUO,... Secondary Secondary Primary -
A Peptide Neurotensin NTR2 NTS2 184 0 - - - Primary -
A Peptide Opioid OPRD δ 5699 7 4EJ4,4N6H,... - Primary - -
A Peptide Opioid OPRK κ 7678 10 4DJH,6B73,... - Primary - Secondary
A Peptide Opioid OPRM μ 9226 19 4DKL,5C1M,... - Primary Secondary -
A Peptide Opioid OPRX NOP 1765 4 4EA3,5DHG,... - Primary - -
A Peptide Orexin OX1R OX1 3559 14 4ZJ8,4ZJC,... Primary Primary Primary -
A Peptide Orexin OX2R OX2 3463 11 4S0V,5WQC,... Primary Primary Primary -
A Peptide Peptide P518 QRFPR QRFP 114 0 - - Primary Primary -
A Peptide Prolactin-releasing peptide PRLHR PrRP 239 0 - - - - -
A Peptide Proteinase-activated PAR1 PAR1 906 1 3VW7 - - - -
A Peptide Proteinase-activated PAR2 PAR2 165 3 5NDD,5NDZ,... - - - -
A Peptide Proteinase-activated PAR3 PAR3 0 0 - - - - -
A Peptide Proteinase-activated PAR4 PAR4 982 0 - - - - -
A Peptide Relaxin family peptide RXFP1 RXFP1 5111 1 7TMW Primary Primary - -
A Peptide Relaxin family peptide RXFP2 RXFP2 24 0 - Primary Primary - -
A Peptide Relaxin family peptide RL3R1 RXFP3 114 0 - - Primary - -
A Peptide Relaxin family peptide RL3R2 RXFP4 69 3 7YJ4,7YK6,... - Primary - -
A Peptide Somatostatin SSR1 SST1 655 0 - - Primary - -
A Peptide Somatostatin SSR2 SST2 1039 17 7T10,7T11,... - Primary - -
A Peptide Somatostatin SSR3 SST3 852 0 - - Primary - -
A Peptide Somatostatin SSR4 SST4 632 2 7XMS,7XMT - Primary - -
A Peptide Somatostatin SSR5 SST5 910 0 - - Primary - -
A Peptide Tachykinin NK1R NK1 2964 11 6E59,6HLL,... Primary - Primary -
A Peptide Tachykinin NK2R NK2 1211 1 7XWO Primary - Primary -
A Peptide Tachykinin NK3R NK3 1030 0 - - - Primary -
A Olfactory Olfactory OR1G1 Olfactory 1G1 0 0 - - - - -
A Peptide Thyrotropin-releasing hormone TRFR TRH1 49 4 7WKD,7X1T,... - - Primary -
A Peptide Urotensin UR2R UT 714 0 - - - Primary -
A Peptide Vasopressin and oxytocin V1AR V1A 1417 0 - - - Primary -
A Peptide Vasopressin and oxytocin V1BR V1B 539 0 - - - Primary -
A Peptide Vasopressin and oxytocin V2R V2 1273 5 7BB6,7BB7,... Primary - - -
A Peptide Vasopressin and oxytocin OXYR OT 1365 3 6TPK,7QVM,... - Secondary Primary -
A Protein Chemerin receptor CML1 chemerin 91 1 7YKD - Primary - -
A Protein Chemerin receptor CML2 chemerin 2 7 0 - - - - -
A Protein Chemokine CCR1 CCR1 808 3 7VL8,7VL9,... - Primary - -
A Protein Chemokine CCR2 CCR2 1843 4 5T1A,6GPS,... - Primary - -
A Protein Chemokine CCR3 CCR3 1157 1 7X9Y - Primary - -
A Protein Chemokine CCR4 CCR4 503 0 - - Primary - -
A Protein Chemokine CCR5 CCR5 2187 11 4MBS,5UIW,... - Primary - -
A Protein Chemokine CCR6 CCR6 257 1 6WWZ - Primary - -
A Protein Chemokine CCR7 CCR7 9 1 6QZH - Primary - -
A Protein Chemokine CCR8 CCR8 186 0 - - Primary - -
A Protein Chemokine CCR9 CCR9 169 1 5LWE - Primary - -
A Protein Chemokine CCR10 CCR10 42 0 - - Primary - -
A Protein Chemokine CXCR1 CXCR1 319 1 8IC0 - Primary Secondary -
A Protein Chemokine CXCR2 CXCR2 1022 3 6LFL,6LFM,... - Primary - -
A Protein Chemokine CXCR3 CXCR3 1560 0 - - Primary - -
A Protein Chemokine CXCR4 CXCR4 943 6 3ODU,3OE0,... - Primary - -
A Protein Chemokine CXCR5 CXCR5 77 0 - - Primary - -
A Protein Chemokine CXCR6 CXCR6 50 0 - - Primary - -
A Protein Chemokine CX3C1 CX3CR1 66 2 7XBW,7XBX - Primary - -
A Protein Chemokine XCR1 XCR1 2 0 - - Primary - -
A Protein Chemokine ACKR1 ACKR1 0 0 - - - - -
A Protein Chemokine ACKR2 ACKR2 0 0 - - - - -
A Protein Chemokine ACKR3 ACKR3 808 7 7SK3,7SK4,... - - - -
A Protein Chemokine ACKR4 ACKR4 3 0 - - - - -
A Protein Chemokine CCRL2 CCRL2 155 0 - - - - -
A Protein Glycoprotein hormone FSHR FSH 72 2 8I2G,8I2H Primary Primary Primary -
A Protein Glycoprotein hormone LSHR LH 113 4 7FIG,7FIH,... Primary - Secondary -
A Protein Glycoprotein hormone TSHR TSH 16269 7 7T9I,7T9M,... Primary - Secondary -
A Protein Prokineticin PKR1 PKR1 167 0 - Secondary - Primary -
A Protein Prokineticin PKR2 PKR2 9 0 - Secondary Secondary Primary -
A Lipid Free fatty acid FFAR1 FFA1 1619 7 4PHU,5KW2,... Secondary Secondary Primary -
A Lipid Free fatty acid FFAR2 FFA2 193 0 - - Secondary Primary -
A Lipid Free fatty acid FFAR3 FFA3 66 0 - - Primary - -
A Lipid Free fatty acid FFAR4 FFA4 398 10 8G59,8H4I,... - - Primary -
A Lipid Free fatty acid GPR42 GPR42 0 0 - - - - -
A Lipid Leukotriene LT4R1 BLT1 363 3 5X33,7K15,... - Primary Primary -
A Lipid Leukotriene LT4R2 BLT2 84 0 - - Primary Secondary -
A Lipid Leukotriene CLTR1 CysLT1 669 2 6RZ4,6RZ5 - Secondary Primary -
A Lipid Leukotriene CLTR2 CysLT2 98 4 6RZ6,6RZ7,... - Secondary Primary -
A Lipid Leukotriene OXER1 OXE 80 0 - - Primary - -
A Lipid Lysophospholipid (LPA) LPAR1 LPA1 296 12 4Z34,4Z35,... - Primary Primary Primary
A Lipid Lysophospholipid (LPA) LPAR2 LPA2 123 0 - - Primary Primary Primary
A Lipid Lysophospholipid (LPA) LPAR3 LPA3 157 0 - - Primary Primary -
A Lipid Lysophospholipid (LPA) LPAR4 LPA4 20 0 - Primary Primary Primary Primary
A Lipid Lysophospholipid (LPA) LPAR5 LPA5 112 0 - - - Primary Primary
A Lipid Lysophospholipid (LPA) LPAR6 LPA6 12 1 5XSZ Primary Primary - Primary
A Lipid Lysophospholipid (S1P) S1PR1 S1P1 2631 16 3V2W,3V2Y,... - Primary - -
A Lipid Lysophospholipid (S1P) S1PR2 S1P2 408 1 7T6B Primary - Primary Primary
A Lipid Lysophospholipid (S1P) S1PR3 S1P3 1111 4 7C4S,7EW2,... - Primary Primary Primary
A Lipid Lysophospholipid (S1P) S1PR4 S1P4 497 0 - - Primary - Primary
A Lipid Lysophospholipid (S1P) S1PR5 S1P5 425 2 7EW1,7YXA - Primary - Primary
A Lipid Cannabinoid CNR1 CB1 6818 11 5TGZ,5U09,... Secondary Primary - -
A Lipid Cannabinoid CNR2 CB2 6849 8 5ZTY,6KPC,... Secondary Primary - -
A Lipid GPR18, GPR55 and GPR119 GPR18 GPR18 50 0 - - Primary Primary -
A Lipid GPR18, GPR55 and GPR119 GPR55 GPR55 637 0 - - - Primary Primary
A Lipid GPR18, GPR55 and GPR119 GP119 GPR119 1615 4 7WCM,7WCN,... Primary - - -
A Lipid Platelet-activating factor PTAFR PAF 1401 2 5ZKP,5ZKQ - Primary Primary -
A Lipid Prostanoid PD2R DP1 713 0 - Primary - - -
A Lipid Prostanoid PD2R2 DP2 2852 3 6D26,6D27,... - Primary - -
A Lipid Prostanoid PE2R1 EP1 1050 0 - - Secondary Primary -
A Lipid Prostanoid PE2R2 EP2 772 3 7CX2,7CX3,... Primary - - -
A Lipid Prostanoid PE2R3 EP3 1134 3 6AK3,6M9T,... - Primary Secondary -
A Lipid Prostanoid PE2R4 EP4 1047 3 5YHL,5YWY,... Primary Secondary - -
A Lipid Prostanoid PF2R FP 230 3 8IUK,8IUL,... Secondary - Primary -
A Lipid Prostanoid PI2R IP 427 0 - Primary Secondary Secondary -
A Lipid Prostanoid TA2R TP 1141 2 6IIU,6IIV - - Primary -
A Melatonin Melatonin MTR1A MT1 1059 8 6ME2,6ME3,... - Primary Secondary -
A Melatonin Melatonin MTR1B MT2 957 5 6ME6,6ME7,... - Primary - -
A Nucleotide Adenosine AA1R A1 7978 5 5N2S,5UEN,... Secondary Primary Secondary -
A Nucleotide Adenosine AA2AR A2A 6758 73 2YDO,2YDV,... Primary - Secondary -
A Nucleotide Adenosine AA2BR A2B 2543 4 7XY6,7XY7,... Primary - Secondary -
A Nucleotide Adenosine AA3R A3 4674 0 - - Primary - -
A Nucleotide P2Y P2RY1 P2Y1 724 3 4XNV,4XNW,... - Secondary Primary -
A Nucleotide P2Y P2RY2 P2Y2 322 0 - - Secondary Primary Secondary
A Nucleotide P2Y P2RY4 P2Y4 180 0 - - - Primary -
A Nucleotide P2Y P2RY6 P2Y6 242 0 - - - Primary Secondary
A Nucleotide P2Y P2Y11 P2Y11 43 0 - Secondary - Primary -
A Nucleotide P2Y P2Y12 P2Y12 1193 5 4NTJ,4PXZ,... - - - -
A Nucleotide P2Y P2Y13 P2Y13 15 0 - - Primary - -
A Nucleotide P2Y P2Y14 P2Y14 348 0 - - Primary - -
A Steroid Bile acid GPBAR GPBA 725 4 7BW0,7CFM,... Primary - - -
A Steroid Estrogen (G protein-coupled) GPER1 GPER 13 0 - Secondary Primary - -
A Alicarboxylic acid Hydroxycarboxylic acid HCAR1 HCA1 188 0 - - Primary - -
A Alicarboxylic acid Hydroxycarboxylic acid HCAR2 HCA2 615 3 7XK2,7ZL9,... - Primary - -
A Alicarboxylic acid Hydroxycarboxylic acid HCAR3 HCA3 121 0 - - Primary - -
A Alicarboxylic acid Oxoglutarate OXGR1 oxoglutarate 44 0 - - - Primary -
A Alicarboxylic acid Succinate SUCR1 succinate 73 3 6IBB,6RNK,... - Primary Secondary -
A Sensory Opsins OPSD Rhodopsin 1 67 1F88,1GZM,... - - - -
A Sensory Opsins OPN3 OPN3 0 0 - - - - -
A Sensory Opsins OPN4 OPN4 0 0 - - Primary Primary -
A Sensory Opsins OPN5 OPN5 0 0 - - Primary - -
A Sensory Opsins OPSB OPN1SW 0 0 - - - - -
A Sensory Opsins OPSG OPN1MW 0 0 - - - - -
A Sensory Opsins OPSR OPN1LW 0 0 - - - - -
A Olfactory Olfactory O2T11 Olfactory 2T11 0 0 - - - - -
A Olfactory Olfactory O51A2 Olfactory 51A2 0 0 - - - - -
A Olfactory Olfactory O51A4 Olfactory 51A4 0 0 - - - - -
A Olfactory Olfactory O51A7 Olfactory 51A7 0 0 - - - - -
A Olfactory Olfactory O51B2 Olfactory 51B2 0 0 - - - - -
A Olfactory Olfactory O51B4 Olfactory 51B4 0 0 - - - - -
A Olfactory Olfactory O51B5 Olfactory 51B5 0 0 - - - - -
A Olfactory Olfactory O51B6 Olfactory 51B6 0 0 - - - - -
A Olfactory Olfactory O51D1 Olfactory 51D1 0 0 - - - - -
A Olfactory Olfactory O51E1 Olfactory 51E1 0 0 - - - - -
A Olfactory Olfactory O51E2 Olfactory 51E2 24 1 8F76 - - - -
A Olfactory Olfactory O51F1 Olfactory 51F1 0 0 - - - - -
A Olfactory Olfactory O51F2 Olfactory 51F2 0 0 - - - - -
A Olfactory Olfactory O51G1 Olfactory 51G1 0 0 - - - - -
A Olfactory Olfactory O51G2 Olfactory 51G2 0 0 - - - - -
A Olfactory Olfactory O51I1 Olfactory 51I1 0 0 - - - - -
A Olfactory Olfactory O51I2 Olfactory 51I2 0 0 - - - - -
A Olfactory Olfactory O51J1 Olfactory 51J1 0 0 - - - - -
A Olfactory Olfactory O51L1 Olfactory 51L1 0 0 - - - - -
A Olfactory Olfactory O51M1 Olfactory 51M1 0 0 - - - - -
A Olfactory Olfactory O51Q1 Olfactory 51Q1 0 0 - - - - -
A Olfactory Olfactory O51S1 Olfactory 51S1 0 0 - - - - -
A Olfactory Olfactory O51T1 Olfactory 51T1 0 0 - - - - -
A Olfactory Olfactory O51V1 Olfactory 51V1 0 0 - - - - -
A Orphan A orphans GPR3 GPR3 2 0 - Primary - - -
A Orphan A orphans GPR4 GPR4 72 0 - Primary Primary Primary Primary
A Orphan A orphans GPR6 GPR6 778 0 - Primary Primary - -
A Orphan A orphans GPR12 GPR12 2 1 7Y3G Primary Primary - -
A Orphan A orphans GPR15 GPR15 3 0 - - - - -
A Orphan A orphans GPR17 GPR17 82 1 7Y89 - Primary Secondary -
A Orphan A orphans GPR19 GPR19 1 0 - - - - -
A Orphan A orphans GPR20 GPR20 0 3 8HS2,8HS3,... - Primary - -
A Orphan A orphans GPR21 GPR21 0 4 8HIX,8HJ0,... - - - -
A Orphan A orphans GPR22 GPR22 0 0 - - Primary - -
A Orphan A orphans GPR25 GPR25 0 0 - - - - -
A Orphan A orphans GPR26 GPR26 0 0 - Primary - - -
T Sensory Taste 2 T2R42 TAS2R42 1 0 - - - - -
A Orphan A orphans GPR27 GPR27 21 0 - - - Primary -
A Orphan A orphans GPR31 GPR31 1 0 - - Primary - -
A Orphan A orphans GPR32 GPR32 3 0 - - - - -
A Orphan A orphans GPR33 GPR33 0 0 - - Primary - -
A Orphan A orphans GPR34 GPR34 86 0 - - Primary - -
A Orphan A orphans GPR35 GPR35 365 1 8H8J - - - -
A Orphan A orphans GPR37 GPR37 2 0 - - Primary - -
A Orphan A orphans G37L1 GPR37L1 1 0 - - Primary - -
A Orphan A orphans GPR39 GPR39 83 0 - Secondary - Primary Secondary
A Orphan A orphans GPR45 GPR45 0 0 - - - - -
A Orphan A orphans MTR1L GPR50 0 0 - - - - -
A Orphan A orphans GPR52 GPR52 315 5 6LI0,6LI1,... - - - -
A Orphan A orphans GPR61 GPR61 1 0 - - - - -
A Orphan A orphans GPR62 GPR62 0 0 - - - - -
A Orphan A orphans GPR63 GPR63 3 0 - - - - -
A Orphan A orphans PSYR GPR65 0 0 - Primary - - -
A Orphan A orphans OGR1 GPR68 6 0 - - Primary Primary -
A Orphan A orphans GPR75 GPR75 1 0 - - - Primary -
A Orphan A orphans GPR78 GPR78 0 0 - Primary - - -
A Orphan A orphans GPR82 GPR82 0 0 - - - - -
A Orphan A orphans GPR83 GPR83 3 0 - - - - -
A Orphan A orphans GPR84 GPR84 593 3 8J18,8J19,... - Primary - -
A Orphan A orphans GPR85 GPR85 0 0 - - - - -
A Orphan A orphans GPR87 GPR87 3 0 - - - - -
A Orphan A orphans GPR88 GPR88 314 2 7EJX,7WZ4 - - - -
A Orphan A orphans GP101 GPR101 0 0 - Primary - - -
A Orphan A orphans GP132 GPR132 4 0 - - - - -
A Orphan A orphans GP135 GPR135 0 0 - - - - -
A Orphan A orphans GP139 GPR139 282 4 7VUG,7VUH,... - - Primary -
A Orphan A orphans GP141 GPR141 0 0 - - - - -
A Orphan A orphans GP142 GPR142 193 0 - - - - -
A Orphan A orphans GP146 GPR146 0 0 - - - - -
A Orphan A orphans GP148 GPR148 0 0 - - - - -
A Orphan A orphans GP149 GPR149 0 0 - - - - -
A Orphan A orphans GP150 GPR150 0 0 - - - - -
A Orphan A orphans GP151 GPR151 0 0 - - - - -
A Orphan A orphans GP152 GPR152 0 0 - - - - -
A Orphan A orphans GP153 GPR153 0 0 - - - - -
A Orphan A orphans GP160 GPR160 0 0 - - - - -
A Orphan A orphans GP161 GPR161 0 0 - - - - -
A Orphan A orphans GP162 GPR162 0 0 - - - - -
A Orphan A orphans GP171 GPR171 0 0 - - - - -
A Orphan A orphans GP173 GPR173 0 0 - - - - -
A Orphan A orphans GP174 GPR174 106 1 7XV3 - - - -
A Orphan A orphans GP176 GPR176 0 0 - - - - -
A Orphan A orphans GP182 GPR182 1 0 - - - - -
A Orphan A orphans GP183 GPR183 102 2 7TUY,7TUZ - Primary - -
A Orphan A orphans LGR4 LGR4 4 0 - - - - -
A Orphan A orphans LGR5 LGR5 4 0 - - - - -
A Orphan A orphans LGR6 LGR6 8 0 - - - - -
A Orphan A orphans MAS MAS1 13 0 - - Primary Primary -
A Orphan A orphans MAS1L MAS1L 0 0 - - - - -
A Orphan A orphans MRGRD MRGPRD 1 4 7Y12,7Y13,... - Primary Primary -
A Orphan A orphans MRGRE MRGPRE 0 0 - - - - -
A Orphan A orphans MRGRF MRGPRF 0 0 - - - - -
A Orphan A orphans MRGRG MRGPRG 0 0 - - - - -
A Orphan A orphans MRGX1 MRGPRX1 158 4 8DWC,8DWG,... - - Primary -
A Orphan A orphans MRGX2 MRGPRX2 21 14 7S8L,7S8M,... - Primary Primary -
A Orphan A orphans MRGX3 MRGPRX3 0 0 - - - Primary -
A Orphan A orphans MRGX4 MRGPRX4 203 1 7S8P - - Primary -
A Orphan A orphans P2RY8 P2RY8 0 0 - - - - -
A Orphan A orphans P2Y10 P2RY10 79 0 - - - - -
A Orphan A orphans TAAR2 TAAR2 0 0 - - - - -
A Orphan A orphans TAAR3 TAAR3 1 0 - - - - -
A Orphan A orphans TAAR5 TAAR5 5 0 - - - - -
A Orphan A orphans TAAR6 TAAR6 0 0 - - - - -
A Orphan A orphans TAA7F TAAR7F 0 1 8PM2 - - - -
A Orphan A orphans TAAR8 TAAR8 0 0 - - - - -
A Orphan A orphans TAAR9 TAAR9 0 7 8ITF,8IW1,... - - - -
B1 Peptide Calcitonin CALCR CT 167 16 5UZ7,6NIY,... Primary - Secondary -
B1 Peptide Calcitonin CALRL calcitonin -like 742 6 6E3Y,6UUN,... - - - -
B1 Peptide Corticotropin-releasing factor CRFR1 CRF1 2485 4 4K5Y,4Z9G,... Primary - Secondary -
B1 Peptide Corticotropin-releasing factor CRFR2 CRF2 169 3 6PB1,7TRY,... Primary - Secondary -
B1 Peptide Glucagon GHRHR GHRH 78 2 7CZ5,7V9M Primary - - -
B1 Peptide Glucagon GIPR GIP 177 6 7DTY,7FIN,... Primary - - -
B1 Peptide Glucagon GLP1R GLP-1 968 38 5NX2,5VAI,... Primary - - -
B1 Peptide Glucagon GLP2R GLP-2 114 1 7D68 Primary - - -
B1 Peptide Glucagon GLR glucagon 1303 13 4L6R,5EE7,... Primary - - -
B1 Peptide Glucagon SCTR secretin 8 3 6WI9,6WZG,... Primary - - -
B1 Peptide Parathyroid hormone PTH1R PTH1 185 22 6FJ3,6NBF,... Primary - Secondary -
B1 Peptide Parathyroid hormone PTH2R PTH2 25 1 7F16 - - - -
B1 Peptide VIP and PACAP PACR PAC1 120 5 6LPB,6M1H,... Primary - Primary -
B1 Peptide VIP and PACAP VIPR1 VPAC1 96 3 6VN7,8E3Y,... Primary Secondary Secondary -
B1 Peptide VIP and PACAP VIPR2 VPAC2 98 2 7VQX,7WBJ Primary - - -
B2 Adhesion ADGRL AGRL1 ADGRL1 3 0 - - - Primary -
B2 Adhesion ADGRL AGRL2 ADGRL2 1 0 - - - - -
B2 Adhesion ADGRL AGRL3 ADGRL3 1 5 7SF7,7WY5,... - - - -
B2 Adhesion ADGRL AGRL4 ADGRL4 0 0 - - - - -
B2 Adhesion ADGRE AGRE1 ADGRE1 0 0 - - - - -
B2 Adhesion ADGRE AGRE2 ADGRE2 0 0 - - - Primary -
B2 Adhesion ADGRE AGRE3 ADGRE3 0 0 - - - - -
B2 Adhesion ADGRE AGRE4 ADGRE4P 0 0 - - - - -
B2 Adhesion ADGRE AGRE5 ADGRE5 0 4 7YDH,7YDJ,... - - - Primary
B2 Adhesion ADGRA AGRA1 ADGRA1 0 0 - - - - -
C Amino acid Metabotropic glutamate GRM7 mGlu7 213 1 7EPC - Primary - -
B2 Adhesion ADGRA AGRA2 ADGRA2 0 0 - - - - -
B2 Adhesion ADGRA AGRA3 ADGRA3 0 0 - - - - -
B2 Adhesion ADGRC CELR1 CELSR1 0 0 - - - - -
B2 Adhesion ADGRC CELR2 CELSR2 0 0 - - - - -
B2 Adhesion ADGRC CELR3 CELSR3 0 0 - - - - -
B2 Adhesion ADGRD AGRD1 ADGRD1 0 2 7EPT,7WU2 Primary - - -
B2 Adhesion ADGRD AGRD2 ADGRD2 0 0 - - - - -
B2 Adhesion ADGRF AGRF1 ADGRF1 0 9 7WU3,7WU4,... - - - -
B2 Adhesion ADGRF AGRF2 ADGRF2 0 0 - - - - -
C Amino acid GABAB GABR1 GABAB1 69 1 6W2Y - - - -
B2 Adhesion ADGRF AGRF3 ADGRF3 0 0 - - - - -
B2 Adhesion ADGRF AGRF4 ADGRF4 0 0 - - - - -
B2 Adhesion ADGRF AGRF5 ADGRF5 0 0 - - - - -
B2 Adhesion ADGRB AGRB1 ADGRB1 1 0 - - - - -
B2 Adhesion ADGRB AGRB2 ADGRB2 0 0 - - - - -
C Ion Calcium-sensing CASR CaS 595 16 7DD5,7DD6,... - Primary Primary Primary
B2 Adhesion ADGRB AGRB3 ADGRB3 0 0 - - - - -
B2 Adhesion ADGRG AGRG1 ADGRG1 0 1 7SF8 - - Primary Primary
B2 Adhesion ADGRG AGRG2 ADGRG2 0 6 7WUI,7WUQ,... - - Secondary -
B2 Adhesion ADGRG AGRG3 ADGRG3 1 2 7D76,7D77 - Primary - -
B2 Adhesion ADGRG AGRG4 ADGRG4 0 1 7WUJ - - - -
B2 Adhesion ADGRG AGRG5 ADGRG5 0 1 7EQ1 - - - -
B2 Adhesion ADGRG AGRG6 ADGRG6 0 0 - - - - -
B2 Adhesion ADGRG AGRG7 ADGRG7 0 0 - - - - -
B2 Adhesion ADGRV AGRV1 ADGRV1 0 0 - - - - -
C Orphan C Orphans GPC5D GPRC5D 1 0 - - - - -
T Sensory Taste 2 T2R40 TAS2R40 5 0 - - - - -
C Amino acid GABAB GABR2 GABAB2 2 12 6UO8,6UO9,... - - - -
C Amino acid Metabotropic glutamate GRM1 mGlu1 1066 3 4OR2,7DGD,... Secondary Secondary Primary -
C Amino acid Metabotropic glutamate GRM2 mGlu2 1981 21 7E9G,7EPA,... - Primary - -
C Amino acid Metabotropic glutamate GRM3 mGlu3 395 3 7WI6,7WI8,... - Primary - -
C Amino acid Metabotropic glutamate GRM4 mGlu4 907 2 7E9H,8JD6 - Primary - -
C Amino acid Metabotropic glutamate GRM5 mGlu5 3883 10 4OO9,5CGC,... Secondary Secondary Primary -
C Amino acid Metabotropic glutamate GRM6 mGlu6 144 0 - - Primary - -
T Sensory Taste 2 T2R39 TAS2R39 16 0 - - - - -
C Amino acid Metabotropic glutamate GRM8 mGlu8 185 0 - - Primary - -
C Sensory Taste 1 TS1R1 TAS1R1 0 0 - - - - -
C Sensory Taste 1 TS1R2 TAS1R2 0 0 - - - - -
C Sensory Taste 1 TS1R3 TAS1R3 0 0 - - - - -
C Orphan C Orphans GP156 GPR156 0 0 - - - - -
C Orphan C Orphans GP158 GPR158 0 5 7EWL,7EWP,... - - - -
C Orphan C Orphans GP179 GPR179 0 0 - - - - -
C Orphan C Orphans RAI3 GPRC5A 0 0 - - - - -
C Orphan C Orphans GPC5B GPRC5B 0 0 - - - - -
C Orphan C Orphans GPC5C GPRC5C 0 0 - - - - -
T Sensory Taste 2 T2R41 TAS2R41 2 0 - - - - -
C Orphan C Orphans GPC6A GPRC6 19 0 - - - Primary -
D1 Ste2-like STE2 STE2 STE2 0 1 7AD3 - - - -
F Protein Frizzled FZD1 FZD1 8 0 - - Secondary Secondary -
F Protein Frizzled FZD2 FZD2 5 0 - - Primary - -
F Protein Frizzled FZD3 FZD3 0 0 - Primary - - -
F Protein Frizzled FZD4 FZD4 3 1 6BD4 - - - Primary
F Protein Frizzled FZD5 FZD5 1 1 6WW2 - - - -
F Protein Frizzled FZD6 FZD6 4 0 - - Primary Primary -
F Protein Frizzled FZD7 FZD7 39 1 7EVW Primary Primary - -
F Protein Frizzled FZD8 FZD8 2 0 - - - - -
F Protein Frizzled FZD9 FZD9 0 0 - - Primary - -
F Protein Frizzled FZD10 FZD10 0 0 - - - - Secondary
F Protein Frizzled SMO SMO 969 19 4JKV,4N4W,... - Primary - Primary
T Sensory Taste 2 TA2R1 TAS2R1 5 0 - - - - -
T Sensory Taste 2 TA2R3 TAS2R3 2 0 - - - - -
T Sensory Taste 2 TA2R4 TAS2R4 6 0 - - - - -
T Sensory Taste 2 TA2R5 TAS2R5 4 0 - - - - -
T Sensory Taste 2 TA2R7 TAS2R7 4 0 - - - - -
T Sensory Taste 2 TA2R8 TAS2R8 325 0 - - - - -
T Sensory Taste 2 TA2R9 TAS2R9 4 0 - - - - -
T Sensory Taste 2 T2R10 TAS2R10 9 0 - - - - -
T Sensory Taste 2 T2R13 TAS2R13 3 0 - - - - -
T Sensory Taste 2 T2R14 TAS2R14 142 0 - - - - -
T Sensory Taste 2 T2R16 TAS2R16 8 0 - - - - -
T Sensory Taste 2 T2R19 TAS2R19 1 0 - - - - -
T Sensory Taste 2 T2R20 TAS2R20 7 0 - - - - -
T Sensory Taste 2 T2R30 TAS2R30 4 0 - - - - -
T Sensory Taste 2 T2R31 TAS2R31 14 0 - - - - -
T Sensory Taste 2 T2R38 TAS2R38 13 0 - - - - -
T Sensory Taste 2 T2R43 TAS2R43 14 0 - - - - -
T Sensory Taste 2 T2R45 TAS2R45 1 0 - - - - -
T Sensory Taste 2 T2R46 TAS2R46 26 3 7XP4,7XP5,... - - - -
T Sensory Taste 2 T2R50 TAS2R50 3 0 - - - - -
T Sensory Taste 2 T2R60 TAS2R60 1 0 - - - - -
Other Orphan Other GPCR orphans GP107 GPR107 0 0 - - - - -
Other Orphan Other GPCR orphans G137A GPR137 0 0 - - - - -
Other Orphan Other GPCR orphans TPRA1 TPRA1 0 0 - - - - -
Other Orphan Other GPCR orphans GP143 GPR143 1 0 - - - - -
Other Orphan Other GPCR orphans GP157 GPR157 0 0 - - - - -
Other Orphan Other GPCR orphans TM116 GPR214 0 0 - - - - -
A Aminergic 5-Hydroxytryptamine 5HT5B 5-HT5B 1 0 - - - - -
A Orphan A orphans TAAR4 TAAR4P 3 0 - - - - -
A Other Unclassified US28 US28 25 7 4XT1,4XT3,... - - - -
A Sensory Opsins A0A0K0YBE3 Other 0 0 - - - - -
A Sensory Opsins R9R6C6 TMTOPS2 0 0 - - - - -
A Sensory Opsins A0A1E1G6Y8 Parapinopsin 0 0 - - - - -
A Sensory Opsins Q95P33 CI-OPSIN1 0 0 - - - - -
A Sensory Opsins E7FEE5 OPN7B 0 0 - - - - -
A Sensory Opsins R9R6D2 TMT 0 0 - - - - -
A Other Unclassified Q3KSP2 BILF1 0 1 7JHJ - - - -
A Sensory Opsins Q868G4 AMPHIOP1 0 0 - - - - -
A Sensory Opsins F1NU85 OPN5-like 0 0 - - - - -
A Sensory Opsins W5J8F8 AND_008710 0 0 - - - - -