PARP1 and cancer: Interestingly the proteomic study finding BAG2 stabilizes mtp53 also identified MCM proteins interacting with mtp53, and the proteomic study finding MCM2–7 is involved in DNA repair also found BAG2 interacting with the complex.20,37 This suggests that stable mtp53 may help recruit MCM2–7 and PARP proteins to chromatin in order to help cancer cells survive during replication stress.