Rad9 antibody

Rad9 (cell cycle checkpoint control protein RAD9A or hRAD9) is an evolutionarily conserved protein which serves multiple functions for preserving genomic integrity, and besides its role as intra-S/G2 checkpoint , it also implicates in homologous recombination repair, base excision repair and mismatch repair pathways. PRKCD mediated Rad9 phosphorylation is essential for the assembly of 9-1-1 cell-cycle checkpoint response complex which is recruited to DNA lesion upon damage by RFC (RAD17-replication factor C) clamp loader complex. Thereafter, Rad9 acts as sliding clamp platform on DNA for multiple proteins involved in LP-BER (long-patch base excision repair). 9-1-1 complex stimulates DNA polymerase beta activity/stability, and is necessary for the recruitment of RHNO1 to sites of DNA-DSBs that occurs during S phase of cell cycle. Moreover, Rad9 exerts 3'->5' double stranded DNA exonuclease activity, and it transactivate p53 target genes such as p21 and has been shown to induce apoptosis through its interaction with Bcl-2/Bcl-xL.