RAP1GAP Antibody – Mouse Monoclonal

This gene encodes a type of GTPase-activating-protein (GAP) that down-regulates the activity of the ras-related RAP1 protein. RAP1 acts as a molecular switch by cycling between an inactive GDP-bound form and an active GTP-bound form. The product of this gene, RAP1GAP, promotes the hydrolysis of bound GTP and hence returns RAP1 to the inactive state whereas other proteins, guanine nucleotide exchange factors (GEFs), act as RAP1 activators by facilitating the conversion of RAP1 from the GDP- to the GTP-bound form. In general, ras subfamily proteins, such as RAP1, play key roles in receptor-linked signaling pathways that control cell growth and differentiation. RAP1 plays a role in diverse processes such as cell proliferation, adhesion, differentiation, and embryogenesis. Alternative splicing results in multiple transcript variants encoding distinct proteins. [provided by RefSeq, Aug 2011]

RAP1GAP: a GTPase activator for the nuclear Ras-related regulatory protein RAP-1A (KREV-1), converting it to the putatively inactive GDP-bound state.

Protein type: GAPs; GAPs, Ras; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 1p36.12

Cellular Component: cytosol; membrane

Molecular Function: GTPase activator activity; protein binding; protein homodimerization activity; Ras GTPase binding

Biological Process: positive regulation of GTPase activity; regulation of GTPase activity