Probable G-protein coupled receptor 133 is aprotein that in humans is encoded by theGPR133gene.[5][6]
This gene encodes a member of theadhesion-GPCR family of receptors. Family members are characterized by an extended extracellular region with a variable number of protein domains coupled to a TM7 domain via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.[7][8]
GPR133 bindsandrogens, specifically the androgen5α-dihydrotestosterone (5α-DHT).[9] GPR133 is an adhesion G protein-coupled receptor that functions as a membrane receptor for androgens. When activated by 5α-DHT, GPR133 increases intracellularcyclic AMP (cAMP) levels in muscle cells, leading to enhanced muscle strength.[9]
^abYang Z, Ping YQ, Wang MW, Zhang C, Zhou SH, Xi YT, et al. (January 2025). "Identification, structure, and agonist design of an androgen membrane receptor".Cell.doi:10.1016/j.cell.2025.01.006.PMID39884271.
Vanti WB, Nguyen T, Cheng R, Lynch KR, George SR, O'Dowd BF (May 2003). "Novel human G-protein-coupled receptors".Biochemical and Biophysical Research Communications.305 (1):67–71.doi:10.1016/S0006-291X(03)00709-5.PMID12732197.
Bjarnadóttir TK, Fredriksson R, Höglund PJ, Gloriam DE, Lagerström MC, Schiöth HB (July 2004). "The human and mouse repertoire of the adhesion family of G-protein-coupled receptors".Genomics.84 (1):23–33.doi:10.1016/j.ygeno.2003.12.004.PMID15203201.
