Essential roles are played by aurora A, a cancer susceptibility gene in the motivation of proliferating cells to G2/M development, centrosome growth separation, bipolar spindle development, and spindle injury recovery. Others and we have previously identified functional inactivation of p53 cyst suppressor protein after Aurora GDC-0068 FGFR Inhibitors A phosphorylation at serine 315 and serine 215 residues, the former helps Mdm2 mediated destruction, and the latter causes loss of DNA binding ability in individual cells. Aurora A phosphorylation of BRCA1 at serine 308 is correlated with silencing of DNAdamage induced G2/Mcheckpoint. Furthermore, overexpression of AuroraA makes HeLa cells resistant to taxol induced cell death because of mitotic SAC override. A recently available study found that therapy of p53 deficient cells with Aurora A little molecule inhibitors initiates p73 transactivation function with upregulation of its downstream goal genes during Endosymbiotic theory induction of cell death. But, the molecular mechanisms underlying the observed results have not been elucidated. The role of p73 in tumorigenesis has been debated since loss in function mutations in the gene is rare. However, recently created transactivation capable p73 specific geneknockout mice have a top incidence of spontaneous and carcinogen induced tumors. Additionally, oocytes and cells lacking TAp73 show unusual spindle construction and mitotic slippage with spindle toxins, showing participation of TAp73 in the SAC path. More recent studies have demonstrated that TAp73 interacts with SAC proteins Bub1, Bub3, and BubR1. TAp73 bad or knockdown cells show mislocalization of Bub1 and BubR1 at the kinetochore and paid down BubR1 kinase activity, related to aneuploidy and chromosome instability. Together with proapoptotic function of TAp73 in a reaction to genotoxic stress, these results claim that p73 is directly concerned in maintaining genomic stability and managing SAC path. In view of Aurora AP26113 A overexpression reported to cause resistance to DNA damage mediated apoptosis answer and SAC override, we investigated the possible role of Aurora A practical connection with p73 and the underlying molecular mechanisms involved in the development of those phenotypes. We hypothesized that direct phosphorylation of p73 by Aurora A negatively handles p73 transactivation function and consequential activation of apoptosis result. Because p73 is reported to be phosphorylated in mitosis, we addressed nocodazole and taxol caught mitotic Cos 1 cells with Aurora A specific inhibitor MLN8054 and proteasome inhibitor MG132 to find Aurora A specific posttranslational p73 modification. p73 from chemical addressed although p73 from exponentially growing cells had intermediate mobility, mitotic cells migrated faster than that from untreated cells. The slower migrating form was seen in cells with lively Aurora A, detected with anti phospho T288 antibody.