Involvement of a chromatin remodeling complex in damage tolerance during DNA replication.
Nat Struct Mol Biol, 2009/11;16(11):1167-72.
Falbo KB[1], Alabert C, Katou Y, Wu S, Han J, Wehr T, Xiao J, He X, Zhang Z, Shi Y, Shirahige K, Pasero P, Shen X
Affiliations
PMID: 19855395DOI: 10.1038/nsmb.1686
Impact factor: 18.361
Abstract
ATP-dependent chromatin remodeling complexes have been shown to participate in DNA replication in addition to transcription and DNA repair. However, the mechanisms of their involvement in DNA replication remain unclear. Here, we reveal a specific function of the yeast INO80 chromatin remodeling complex in the DNA damage tolerance pathways. Whereas INO80 is necessary for the resumption of replication at forks stalled by methyl methane sulfonate (MMS), it is not required for replication fork collapse after treatment with hydroxyurea (HU). Mechanistically, INO80 regulates DNA damage tolerance during replication through modulation of PCNA (proliferating cell nuclear antigen) ubiquitination and Rad51-mediated processing of recombination intermediates at impeded replication forks. Our findings establish a mechanistic link between INO80 and DNA damage tolerance pathways, indicating that chromatin remodeling is important for accurate DNA replication.
MeSH terms
Chromatin Assembly and Disassembly; Chromatin Immunoprecipitation; DNA Damage; DNA Replication; Flow Cytometry; Hydroxyurea; Proliferating Cell Nuclear Antigen; Rad51 Recombinase; Saccharomyces cerevisiae; Saccharomyces cerevisiae Proteins; Ubiquitination
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