Is predicted to encode a protein with the following domains: RGS domain superfamily; RGS domain; RGS, subdomain 2; RGS, subdomain 1/3; and Regulator of G protein signaling domain. Is an ortholog of C. elegans rgs-1 and rgs-2. In C. elegans, rgs-1 is involved in chemosensory behavior and sensory perception of bitter taste.