Anti-RASSF1 from rabbit, purified by affinity chromatography

Ras association domain-containing protein 1 (UniProt: Q9NS23; RASSF1) is encoded by the RASSF1 (also known as RDA32) gene (Gene ID: 11186) in human. RASSF1 serves as a potential tumor suppressor and is shown to be essential for death receptor-dependent apoptosis. It mediates the activation of STK3/MST2 and STK4/MST1 during Fas-induced apoptosis by preventing their dephosphorylation. In association with MOAP1, it promotes Bax conformational change and translocation to mitochondrial membranes in response to TNF and TNFSF10 stimulation. Eight isoforms of RASSF1 have been described that are produced by alternative promoter usage and alternative splicing. The immunogen sequence used to generate this antibody is conserved in isoforms A, D, E, F and G. Isoform A is ubiquitously expressed and is shown to localize to cytoplasmic microtubules during interphase, to bipolar centrosomes associated with microtubules during prophase, to spindle fibers and spindle poles at metaphase and anaphase, to the midzone during early telophase, and to the midbody in late telophase in cells. Isoform A is reported to interact with CDC20, an activator of the anaphase-promoting complex (APC), resulting in the inhibition of APC activity and mitotic progression. It Inhibits proliferation by negatively regulating cell cycle progression at the level of G1/S-phase transition by regulating accumulation of cyclin D1 protein. It also disrupts interactions among MDM2, DAXX and USP7 and thereby contributes to the efficient activation of TP53 by promoting MDM2 self-ubiquitination in cell-cycle checkpoint control in response to DNA damage.