• Structure coverage
• Receptor-ligand complexes
• Odorant receptors

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)	O1 (fish-like odorant)	O2 (tetrapod specific odorant)	T2 (Taste 2)	Other GPCRs	Total
Receptors	1358	148	34	115	1	34	5	3	18	0	1716
Receptor - ligand complexes	1356	148	34	115	1	34	5	3	18	0	1714
Receptor - G protein complexes	786	123	32	18	1	11	3	3	16	0	993
Active-state receptors*	886	128	32	47	1	13	4	3	16	0	1130

Number of unique receptor complexes

Class (Family)	A (Rhodopsin)	B1 (Secretin)	B2 (Adhesion)	C (Glutamate)	D1 (Ste2-like fungal pheromone)	F (Frizzled)	O1 (fish-like odorant)	O2 (tetrapod specific odorant)	T2 (Taste 2)	Other GPCRs	Total
Receptors**	185	15	9	13	1	7	3	3	2	0	238
Receptor - ligand complexes	851	97	13	64	1	19	4	3	6	0	1058
Receptor - G protein complexes	170	15	9	5	1	5	3	3	2	0	213
Active-state receptors*	174	15	9	7	1	5	3	3	2	0	219

*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 2025-01-01.