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• W2912046279 endingPage "e0211878" @default.
• W2912046279 startingPage "e0211878" @default.
• W2912046279 abstract "In all organisms, DNA damage must be repaired quickly and properly, as it can be lethal for cells. Because eukaryotic DNA is packaged into nucleosomes, the structural units of chromatin, chromatin modification is necessary during DNA damage repair and is achieved by histone modification and chromatin remodeling. Chromatin remodeling proteins therefore play important roles in the DNA damage response (DDR) by modifying the accessibility of DNA damage sites. Here, we show that mutation in a SWI2/SNF2 chromatin remodeling protein (DDM1) causes hypersensitivity in the DNA damage response via defects in single-strand annealing (SSA) repair of double-strand breaks (DSBs) as well as in the initial steps of homologous recombination (HR) repair. ddm1 mutants such as ddm1-1 and ddm1-2 exhibited increased root cell death and higher DSB frequency compared to the wild type after gamma irradiation. Although the DDM1 mutation did not affect the expression of most DDR genes, it did cause substantial decrease in the frequency of SSA as well as partial inhibition in the γ-H2AX and Rad51 induction, the initial steps of HR. Furthermore, global chromatin structure seemed to be affected by DDM1 mutations. These results suggest that DDM1 is involved in the homology directed repair such as SSA and HR, probably by modifying chromatin structure." @default.
• W2912046279 created "2019-02-21" @default.
• W2912046279 creator A5024595677 @default.
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• W2912046279 creator A5074824488 @default.
• W2912046279 date "2019-02-11" @default.
• W2912046279 modified "2023-10-01" @default.
• W2912046279 title "Mutation in DDM1 inhibits the homology directed repair of double strand breaks" @default.
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• W2912046279 doi "https://doi.org/10.1371/journal.pone.0211878" @default.
• W2912046279 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6370192" @default.
• W2912046279 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30742642" @default.
• W2912046279 hasPublicationYear "2019" @default.
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