Abstract
Polymerase δ-interacting protein 2 (PolDIP2) is involved in the multiple protein-protein interactions and plays roles in many cellular processes including regulation of the nuclear redox environment, organization of the mitotic spindle and chromosome segregation, pre-mRNA processing, mitochondrial morphology and functions, cell migration and cellular adhesion. PolDIP2 is also a binding partner of high-fidelity DNA polymerase delta, PCNA and a number of translesion and repair DNA polymerases. The growing evidence suggests that PolDIP2 is a general regulatory protein in DNA damage response. However PolDIP2 functions in DNA translesion synthesis and repair are not fully understood. In this review, we address the functional interaction of PolDIP2 with human DNA polymerases and discuss the possible functions in DNA damage response.
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