Description
Product Characteristics:
Cellular signaling by G-proteins is down-regulated by GTPase-activating proteins (GAPs), which increase the rate of GTP hydroylsis. The GTPase regulator associated with focal adhesion kinase (GRAF) has GAP activity toward Rho A and Cdc42, but not Rac1. GRAF is ubiquitously expressed with high levels in heart and brain. Expression of GRAF causes clearing of stress fibers and formation of long actin based filopodial-like extensions. Fusion of MLL with GRAF, MLL/GRAF, is included in a rare genetic subgroup of acute myeloid leukemia (AML) cases.
Subcellular location: Cytoplasm, Cell membrane
Synonyms: arhgap 26, ARHGAP26, FLJ42530, GRAF, GRAF1, GTPase regulator associated with focal adhesion kinase, GTPase regulator associated with focal adhesion kinase pp125FAK, KIAA0621, oligophrenin 1 like protein, Oligophrenin-1-like protein, oligophrenin1like protein, OPHN1L, OPHN1L1, RHG26_HUMAN, Rho GTPase activating protein 26, Rho GTPase activating protein26, Rho GTPase-activating protein 26, Rho-type GTPase-activating protein 26.
Target Information: Interaction of a cell with the extracellular matrix triggers integrin cell surface receptors to begin signaling cascades that regulate the organization of the actin-cytoskeleton. One of the proteins involved in these cascades is focal adhesion kinase. The protein encoded by this gene is a GTPase activating protein that binds to focal adhesion kinase and mediates the activity of the GTP binding proteins RhoA and Cdc42. Defects in this gene are a cause of juvenile myelomonocytic leukemia (JMML). Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2010]