Fig. 7: Diagram of the mechanism of NUSAP1 promoting DNA repair process by binding with RAD51.

RAD51 bound with the C-terminus of NUSAP1, meanwhile the SAP domain at the N-terminus of NUSAP1 may promote SUMOylation of RAD51, which prevented it from degradation, contributing to DNA damage repair pathway and promoting cancer cell growth or enhancing therapy resistance.