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	471	60	2	43	1	20	0	597
Receptor - ligand complexes	464	59	2	43	1	20	0	589
Receptor - G protein complexes	81	41	2	4	1	6	0	135
Active-state receptors*	158	43	2	13	1	7	0	224

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**	83	13	1	8	1	4	0	110
Receptor - ligand complexes	300	40	2	36	1	13	0	392
Receptor - G protein complexes	36	13	1	3	1	2	0	56
Active-state receptors*	44	13	1	3	1	2	0	64

*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 2021-08-04.

Structural coverage of GPCR Classes