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• W3201068914 endingPage "e1009816" @default.
• W3201068914 startingPage "e1009816" @default.
• W3201068914 abstract "The NuA4 histone acetyltransferase complex, apart from its known role in gene regulation, has also been directly implicated in the repair of DNA double-strand breaks (DSBs), favoring homologous recombination (HR) in S/G2 during the cell cycle. Here, we investigate the antagonistic relationship of NuA4 with non-homologous end joining (NHEJ) factors. We show that budding yeast Rad9, the 53BP1 ortholog, can inhibit NuA4 acetyltransferase activity when bound to chromatin in vitro. While we previously reported that NuA4 is recruited at DSBs during the S/G2 phase, we can also detect its recruitment in G1 when genes for Rad9 and NHEJ factors Yku80 and Nej1 are mutated. This is accompanied with the binding of single-strand DNA binding protein RPA and Rad52, indicating DNA end resection in G1 as well as recruitment of the HR machinery. This NuA4 recruitment to DSBs in G1 depends on Mre11-Rad50-Xrs2 (MRX) and Lcd1/Ddc2 and is linked to the hyper-resection phenotype of NHEJ mutants. It also implicates NuA4 in the resection-based single-strand annealing (SSA) repair pathway along Rad52. Interestingly, we identified two novel non-histone acetylation targets of NuA4, Nej1 and Yku80. Acetyl-mimicking mutant of Nej1 inhibits repair of DNA breaks by NHEJ, decreases its interaction with other core NHEJ factors such as Yku80 and Lif1 and favors end resection. Altogether, these results establish a strong reciprocal antagonistic regulatory function of NuA4 and NHEJ factors in repair pathway choice and suggests a role of NuA4 in alternative repair mechanisms in situations where some DNA-end resection can occur in G1." @default.
• W3201068914 created "2021-09-27" @default.
• W3201068914 creator A5011334321 @default.
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• W3201068914 date "2021-09-20" @default.
• W3201068914 modified "2023-10-16" @default.
• W3201068914 title "Antagonistic relationship of NuA4 with the non-homologous end-joining machinery at DNA damage sites" @default.
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• W3201068914 doi "https://doi.org/10.1371/journal.pgen.1009816" @default.
• W3201068914 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8483352" @default.
• W3201068914 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34543274" @default.
• W3201068914 hasPublicationYear "2021" @default.
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