FUNCTION: Down-regulates signaling from heterotrimeric G-proteins by increasing the GTPase activity of the alpha subunits, thereby driving them into their inactive GDP-bound form. Down-regulates G-protein-mediated release of inositol phosphates and activation of MAP kinases. {ECO:0000269|PubMed:1074...FUNCTION: Down-regulates signaling from heterotrimeric G-proteins by increasing the GTPase activity of the alpha subunits, thereby driving them into their inactive GDP-bound form. Down-regulates G-protein-mediated release of inositol phosphates and activation of MAP kinases. {ECO:0000269|PubMed:10749886, ECO:0000269|PubMed:11294858, ECO:0000269|PubMed:8602223, ECO:0000269|PubMed:9858594}.View more >>
GO - Biological processes (BP): G protein-coupled receptor signaling pathway [GO:0007186]; negative regulation of signal transduction [GO:0009968]; regulation of G protein-coupled receptor signaling pathway [GO:0008277]; signal transduction [GO:0007165]...G protein-coupled receptor signaling pathway [GO:0007186]; negative regulation of signal transduction [GO:0009968]; regulation of G protein-coupled receptor signaling pathway [GO:0008277]; signal transduction [GO:0007165]View more >>
GO - Molecular function (MF): GTPase activator activity [GO:0005096]; GTPase activity [GO:0003924]...GTPase activator activity [GO:0005096]; GTPase activity [GO:0003924]View more >>
GO - Cellular component (CC): cytosol [GO:0005829]; nucleus [GO:0005634]; plasma membrane [GO:0005886]...cytosol [GO:0005829]; nucleus [GO:0005634]; plasma membrane [GO:0005886]View more >>