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SUMO and ubiquitin-dependent XPC exchange drives nucleotide excision repair
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SUMO and ubiquitin-dependent XPC exchange drives nucleotide excision repair
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Journal Article
SUMO and ubiquitin-dependent XPC exchange drives nucleotide excision repair
2015
Overview
XPC recognizes UV-induced DNA lesions and initiates their removal by nucleotide excision repair (NER). Damage recognition in NER is tightly controlled by ubiquitin and SUMO modifications. Recent studies have shown that the SUMO-targeted ubiquitin ligase RNF111 promotes K63-linked ubiquitylation of SUMOylated XPC after DNA damage. However, the exact regulatory function of these modifications
in vivo
remains elusive. Here we show that RNF111 is required for efficient repair of ultraviolet-induced DNA lesions. RNF111-mediated ubiquitylation promotes the release of XPC from damaged DNA after NER initiation, and is needed for stable incorporation of the NER endonucleases XPG and ERCC1/XPF. Our data suggest that RNF111, together with the CRL4
DDB2
ubiquitin ligase complex, is responsible for sequential XPC ubiquitylation, which regulates the recruitment and release of XPC and is crucial for efficient progression of the NER reaction, thereby providing an extra layer of quality control of NER.
The SUMO-targeted ubiquitin ligase RNF111 promotes K63-linked ubiquitylation of SUMOylated XPC after DNA damage. Here the authors show that RNF111 is responsible for sequential XPC ubiquitylation, and RNF111-mediated ubiquitylation promotes the release of XPC from damaged DNA after NER initiation.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Pub. Group
Subject
/ 13/51
/ 13/89
/ 14/19
/ 14/35
/ 96
/ 96/63
/ DNA
/ DNA-Binding Proteins - genetics
/ DNA-Binding Proteins - metabolism
/ Gene Expression Regulation - physiology
/ Humanities and Social Sciences
/ Humans
/ Lesions
/ Nuclear Proteins - metabolism
/ Science
/ Transcription Factors - genetics
/ Transcription Factors - metabolism
