Number of unique ligands per receptor class

Class
(Family)
A (Rhodopsin) B1 (Secretin) B2 (Adhesion) C (Glutamate) D1
(Ste2-like fungal pheromone)
F (Frizzled) T2 (Taste 2)
Total
No. biased ligands 198,810 6,165 6 8,283 0 1,019 548
No. GPCRs with ligand 240 15 5 13 0 8 25
Specific sets of ligands can be downloaded from the ligand browser.


Ligand coverage of GPCR classes


Receptor names:

Circle colors indicate a number of ligands:
< 100
< 500
< 1000
1000+