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Functions of PARylation in DNA Damage Repair Pathways

By Huiting Wei and Xiaochun Yu

Abstract

Protein poly ADP-ribosylation (PARylation) is a widespread post-translational modification at DNA lesions, which is catalyzed by poly(ADP-ribose) polymerases (PARPs). This modification regulates a number of biological processes including chromatin reorganization, DNA damage response (DDR), transcriptional regulation, apoptosis, and mitosis. PARP1, functioning as a DNA damage sensor, can be activated by DNA lesions, forming PAR chains that serve as a docking platform for DNA repair factors with high biochemical complexity. Here, we highlight molecular insights into PARylation recognition, the expanding role of PARylation in DDR pathways, and the functional interaction between PARylation and ubiquitination, which will offer us a better understanding of the biological roles of this unique post-translational modification

Topics: Poly ADP-ribosylation, PARPs, DNA damage response, PAR-binding modules, Ubiquitination, Biology (General), QH301-705.5
Publisher: Elsevier
Year: 2016
DOI identifier: 10.1016/j.gpb.2016.05.001
OAI identifier: oai:doaj.org/article:b74c37102ff3496d890ff6926566d726
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