RGS17

This gene encodes a member of the regulator of G-protein signaling family. This protein contains a conserved, 120 amino acid motif called the RGS domain and a cysteine-rich region. The protein attenuates the signaling activity of G-proteins by binding to activated, GTP-bound G alpha subunits and acting as a GTPase activating protein (GAP), increasing the rate of conversion of the GTP to GDP. This hydrolysis allows the G alpha subunits to bind G beta/gamma subunit heterodimers, forming inactive G-protein heterotrimers, thereby terminating the signal. [provided by RefSeq, Jul 2008]

Full Name

Regulator Of G Protein Signaling 17

Function

Regulates G protein-coupled receptor signaling cascades, including signaling via muscarinic acetylcholine receptor CHRM2 and dopamine receptor DRD2. Inhibits signal transduction by increasing the GTPase activity of G protein alpha subunits, thereby driving them into their inactive GDP-bound form (PubMed:15096504).
Binds selectively to GNAZ and GNAI2 subunits, accelerates their GTPase activity and regulates their signaling activities. Negatively regulates mu-opioid receptor-mediated activation of the G-proteins (By similarity).

Biological Process

Biological Process G protein-coupled receptor signaling pathwayTAS:Reactome
Biological Process negative regulation of signal transductionIEA:UniProtKB-KW

Cellular Location

Membrane
Synapse, synaptosome
Nucleus
Cytoplasm

PTM

N- and O-glycosylated in synapsomal membranes.
Serine phosphorylated in synapsomal membranes.
Sumoylated with SUMO1 and SUM02 in synaptosomes. The sumoylated forms act as a scaffold for sequestering mu-opioid receptor-activated G(alpha) subunits (By similarity).
Desumoylated by HINT1 (By similarity).