Rhodopsin family
Secretin receptor family
Adhesion receptor family
Metabotropic glutamate receptor family
Frizzled / Smoothened family
Others
Chemoreception
Ocular albinism proteins
Neuronostatin
Plant Mlo receptors
cAMP signaling
Bacterial rhodopsin
K04641 bop; bacteriorhodopsin K04642 hop; halorhodopsin K04643 sop; sensory rhodopsin
Orphan GPCRs