Rhodopsin family
Biogenic amine
Peptide
Chemokine
Base and nucleoside
Purine / pyrimidine
Adenosine
K04265 ADORA1; adenosine receptor A1 K04266 ADORA2A, ADOR; adenosine receptor A2a K04267 ADORA2B; adenosine receptor A2b K04268 ADORA3; adenosine receptor A3
Lipid
Vision
Others
Secretin receptor family
Adhesion receptor family
Metabotropic glutamate receptor family
Frizzled / Smoothened family