Entrez Summary: G-protein signaling modulators (GPSMs) play diverse functional roles through their interaction with G-protein subunits. This gene encodes a receptor-independent activator of G protein signaling, which is one of several factors that influence the basal activity of G-protein signaling systems. The protein contains seven tetratricopeptide repeats in its N-terminal half and four G-protein regulatory (GPR) motifs in its C-terminal half. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011].
UniProt Summary: Guanine nucleotide dissociation inhibitor (GDI) which functions as a receptor-independent activator of heterotrimeric G- protein signaling. Keeps G(i/o) alpha subunit in its GDP-bound form thus uncoupling heterotrimeric G-proteins signaling from G protein-coupled receptors. Controls spindle orientation and asymmetric cell fate of cerebral cortical progenitors. May also be involved in macroautophagy in intestinal cells. May play a role in drug addiction. {ECO:0000269|PubMed:11024022, ECO:0000269|PubMed:12642577}.
Pfam DomainsGO Terms
Pfam Domains
GoLoco
GO Terms
negative regulation of guanyl-nucleotide exchange factor activity
regulation of guanyl-nucleotide exchange factor activity
GDP-dissociation inhibitor activity
regulation of GTP binding
negative regulation of GTPase activity
positive regulation of macroautophagy
negative regulation of protein binding
positive regulation of autophagy
cell cortex
negative regulation of binding
regulation of macroautophagy
positive regulation of binding
regulation of protein binding
regulation of autophagy
positive regulation of cellular catabolic process
regulation of binding
positive regulation of catabolic process
negative regulation of hydrolase activity
regulation of GTPase activity
protein-containing complex
Golgi membrane
negative regulation of catalytic activity
regulation of cellular catabolic process
endoplasmic reticulum membrane
regulation of catabolic process
negative regulation of molecular function
regulation of hydrolase activity
positive regulation of molecular function
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)