Journal
EMBO REPORTS
Volume 16, Issue 4, Pages 512-519Publisher
WILEY-BLACKWELL
DOI: 10.15252/embr.201440017
Keywords
DNA repair; PARP; SLX4; SUMO; ubiquitin
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Funding
- European Research Council
- Netherlands Organization for Scientific Research (NWO)
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SUMOylation plays important roles in the DNA damage response. However, whether it is important for interstrand crosslink repair remains unknown. We report that the SLX4 nuclease scaffold protein is regulated by SUMOylation. We have identified three SUMO interaction motifs (SIMs) in SLX4, mutating all of which abrogated the binding of SLX4 to SUMO-2 and covalent SLX4 SUMOylation. An SLX4 mutant lacking functional SIMs is not recruited to PML nuclear bodies nor stabilized at laser-induced DNA damage sites. Additionally, we elucidated a novel role for PARylation in the recruitment of SLX4 to sites of DNA damage. Combined, our results uncover how SLX4 is regulated by post-translational modifications.
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