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	500	64	2	50	1	20	0	637
Receptor - ligand complexes	493	63	2	50	1	20	0	629
Receptor - G protein complexes	102	45	2	4	1	6	0	160
Active-state receptors*	179	47	2	15	1	7	0	251

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**	88	14	1	8	1	4	0	116
Receptor - ligand complexes	321	42	2	41	1	13	0	420
Receptor - G protein complexes	44	14	1	3	1	2	0	65
Active-state receptors*	52	14	1	4	1	2	0	74

*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 2021-12-15.

Structural coverage of GPCR Classes