G protein-coupled receptor 3
GPR3 Gene
RNA expression pattern

G-protein coupled receptor 3 is a protein that in humans is encoded by the GPR3 gene.[1][2] The protein encoded by this gene is a member of the G protein-coupled receptor family of transmembrane receptors and is involved in signal transduction.


GPR3 activates adenylate cyclase in the absence of ligand.[3] GPR3 is expressed in mammalian oocytes where it maintains meiotic arrest and is thought to be a communication link between oocytes and the surrounding somatic tissue.[4] It has been proposed that sphingosine 1-phosphate (S1P) and sphingosylphosphorylcholine (SPC) are GPR3 ligands,[5][6] however this result was not confirmed in a β-arrestin recruitment assay.[7]


Further reading