[1] Harashima T, Heitman J. Galpha subunit Gpa2 recruits kelch repeat subunitsthat inhibit receptor-G protein coupling during cAMP-induced dimorphictransitions in Saccharomyces cerevisiae. Mol Biol Cell. 2005 Oct;16(10):4557-71. Epub 2005 Jul 19.[PMID:16030250]
Functional Description
Alpha subunit of the heterotrimeric guanine nucleotide- binding protein (G protein) involved in glucose-induced cAMP signaling. Binds to its cognate transmembrane receptor GPR1, which senses extracellular carbon sources, and activates cAMP-PKA signaling and governs diploid pseudohyphal differentiation and haploid invasive growth. The G protein beta-mimic proteins GPB1 and GPB2 inhibit GPA2-GPR1 coupling, probably to reduce signaling in the absence of glucose.