GPR55 (G protein-coupled receptor 55) is a G protein-coupled receptor that in humans is encoded by the GPR55 gene. GPR55, along with GPR119 and GPR18, are novel cannabinoid receptors. Like the CB receptors, GPR55 belongs to the rhodopsin-like seven transmembranes G protein-coupled receptor (GPCR) superfamily. GPR55 and CB2 receptors...