Number of structures, including multiple of same receptor (complex)

Class (Family)	A (Rhodopsin)	B1 (Secretin)	B2 (Adhesion)	C (Glutamate)	D1 (Ste2-like fungal pheromone)	F (Frizzled)	T2 (Taste 2)	Total
Receptors	588	85	2	61	1	20	0	757
Receptor - ligand complexes	575	83	2	60	1	18	0	739
Receptor - G protein complexes	178	66	2	4	1	6	0	257
Active-state receptors*	251	68	2	18	1	7	0	347

Number of unique receptor complexes

Class (Family)	A (Rhodopsin)	B1 (Secretin)	B2 (Adhesion)	C (Glutamate)	D1 (Ste2-like fungal pheromone)	F (Frizzled)	T2 (Taste 2)	Total
Receptors**	96	14	1	10	1	4	0	126
Receptor - ligand complexes	374	52	2	45	1	13	0	487
Receptor - G protein complexes	59	14	1	3	1	2	0	80
Active-state receptors*	66	14	1	5	1	2	0	89

*Active state is defined as agonist-bound and opened intracellular TM bundle. **Receptor-orthologues are only counted once.

Specific sets of structures can be downloaded from the Structures page.
The latest released structure is from 2022-03-30.

Structural coverage of GPCR Classes