G-protein coupled receptor 146 is a protein that in humans is encoded by the GPR146gene.[5] The receptor has been shown to bind cholesin/C17orf50, a gut-derived hormone that is secreted from the intestine in response to dietary cholesterol absorption. In response to cholesin binding, GPR146 signaling inhibit cholesterol synthesis. [6] Consistent with this interaction, murine genetic disruption of GPR146 lowers serum cholesterol and reduces atheroscleroticaortic lesions.[7]
GPR146 has also been identified as a possible receptor for C-peptide.[8]
Gloriam DE, Schiöth HB, Fredriksson R (Apr 2005). "Nine new human Rhodopsin family G-protein coupled receptors: identification, sequence characterisation and evolutionary relationship". Biochimica et Biophysica Acta (BBA) - General Subjects. 1722 (3): 235–46. doi:10.1016/j.bbagen.2004.12.001. PMID15777626.