RGS17 (Regulator of G Protein Signaling 17): RGS17 is a gene that encodes a protein from the regulator of G protein signaling (RGS) family. These proteins help regulate G protein-coupled receptor (GPCR) signaling by accelerating the conversion of GTP to GDP. RGS17 may affect multiple GPCR-regulated pathways, influencing a variety of physiological processes.