GPR1 is one of six proteins required for glucose-triggered adenylate cyclase activation, and is a G protein-coupled receptor responsible for the activation of adenylate cyclase through Gpa2 - heterotrimeric G protein alpha subunit, part of the glucose-detection pathway. The protein contains seven predicted transmembrane domains, a third cytoplasmic loop and a cytoplasmic tail [1]. This family is the conserved C-terminal domain of the member proteins.

1: GPR1 encodes a putative G protein-coupled receptor that associates with the Gpa2p Galpha subunit and functions in a Ras-independent pathway. Xue Y, Batlle M, Hirsch JP; EMBO J. 1998;17:1996-2007. PMID:9524122