Is predicted to encode a protein with the following domains: RGS domain; RGS domain superfamily; Regulator of G protein signaling domain; and Protein kinase-like domain superfamily. Is an ortholog of C. elegans grk-2. In C. elegans, grk-2 is involved in several processes, including positive regulation of egg-laying behavior; positive regulation of growth rate; and serotonin catabolic process.