Structures and Mechanisms of Enzymes Employed in the Synthesis and Degradation of PARP-Dependent Protein ADP-Ribosylation
- PMID: 26091342
- DOI: 10.1016/j.molcel.2015.05.007
Structures and Mechanisms of Enzymes Employed in the Synthesis and Degradation of PARP-Dependent Protein ADP-Ribosylation
Abstract
The poly(ADP-ribose) polymerases (PARPs) are a major family of enzymes capable of modifying proteins by ADP-ribosylation. Due to the large size and diversity of this family, PARPs affect almost every aspect of cellular life and have fundamental roles in DNA repair, transcription, heat shock and cytoplasmic stress responses, cell division, protein degradation, and much more. In the past decade, our understanding of the PARP enzymatic mechanism and activation, as well as regulation of ADP-ribosylation signals by the readers and erasers of protein ADP-ribosylation, has been significantly advanced by the emergence of new structural data, reviewed herein, which allow for better understanding of the biological roles of this widespread post-translational modification.
Copyright © 2015 Elsevier Inc. All rights reserved.
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