Regulator of G-Protein Signaling 20 (RGS20) Human Recombinant Protein

The protein encoded by this gene belongs to the family of regulator of G protein signaling (RGS) proteins, which are regulatory and structural components of G protein-coupled receptor complexes. RGS proteins inhibit signal transduction by increasing the GTPase activity of G protein alpha subunits, thereby driving them into their inactive GDP-bound forms. This protein selectively binds to G(z)-alpha and G(alpha)-i2 subunits, and regulates their signaling activities. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

RGS20: Inhibits signal transduction by increasing the GTPase activity of G protein alpha subunits thereby driving them into their inactive GDP-bound form. Binds selectively to G(z)-alpha and G(alpha)-i2 subunits, accelerates their GTPase activity and regulates their signaling activities. The G(z)-alpha activity is inhibited by the phosphorylation and palmitoylation of the G- protein. Negatively regulates mu-opioid receptor-mediated activation of the G-proteins. 6 isoforms of the human protein are produced by alternative splicing.

Protein type: GAPs; GAPs, misc.

Chromosomal Location of Human Ortholog: 8q11.23

Cellular Component: cytoplasm; plasma membrane; nucleus

Molecular Function: protein binding; GTPase activator activity

Biological Process: regulation of G-protein coupled receptor protein signaling pathway; positive regulation of GTPase activity