ARHGDIB Antibody – Mouse Monoclonal

The protein encoded by this gene is a member of the Rho guanine nucleotide dissociation inhibitor (GDI) family. This gene is expressed at high levels in hematopoietic cells. This protein is cytosolic, and dissociation of Rho from this protein is required for membrane association and activation of Rho by Guanine Nucleotide Exchange Factors (GEFs). C-terminal truncations of this gene product have been reported to promote metastasis. Multiple transcript variants and protein isoforms exist. [provided by RefSeq, Aug 2014]

RhoGDI beta: regulates the GDP/GTP exchange reaction of Rho proteins by inhibiting the dissociation of GDP from them, keeping these small GTPases in an inactive state. The GDIs are made up of two domains: a flexible N-terminal domain of about 70 amino acid residues and a folded 134-residue C-terminal domain. Regulates the GTP/GDP cycling of glucose-responsive small GTPases. Its phosphorylation on Y156, S101, and S174 mediates the cycling of Cdc42 and Rac1 to regulate second-phase insulin secretion. Interacts with WNK1.

Protein type: G protein regulator, misc.; Motility/polarity/chemotaxis; Cell adhesion

Cellular Component: cytoplasm; cytosol; membrane

Molecular Function: GTPase activator activity; GTPase activity; Rac GTPase binding; Rho GDP-dissociation inhibitor activity

Biological Process: regulation of catalytic activity; regulation of Rho protein signal transduction