G Protein-coupled Receptor 123, or, ADGRA1, is a human gene. Other names include: G-protein coupled receptor 123; G protein-coupled receptor 123; GPR123. The encoded protein has an amino acid length of 560 and a mass of 60.9 kDa. Other isoforms may exist. G Protein-coupled Receptor 123 is a member of the G-protein coupled receptor 2 family, Adhesion G-protein coupled receptor (ADGR) subfamily. This gene shares homology with other species, including: Chicken.