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- W2115871947 abstract "Lsh, a chromatin remodeling protein of the SNF2 family, is critical for normal heterochromatin structure. In particular, DNA methylation at repeat elements, a hallmark of heterochromatin, is greatly reduced in Lsh(-/-) (KO) cells. Here, we examined the presumed nucleosome remodeling activity of Lsh on chromatin in the context of DNA methylation. We found that dynamic CG methylation was dependent on Lsh in embryonic stem cells. Moreover, we demonstrate that ATP function is critical for de novo methylation at repeat sequences. The ATP binding site of Lsh is in part required to promote stable association of the DNA methyltransferase 3b with the repeat locus. By performing nucleosome occupancy assays, we found distinct nucleosome occupancy in KO ES cells compared to WT ES cells after differentiation. Nucleosome density was restored to wild-type level by re-expressing wild-type Lsh but not the ATP mutant in KO ES cells. Our results suggest that ATP-dependent nucleosome remodeling is the primary molecular function of Lsh, which may promote de novo methylation in differentiating ES cells." @default.
- W2115871947 created "2016-06-24" @default.
- W2115871947 creator A5004047164 @default.
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- W2115871947 date "2015-01-10" @default.
- W2115871947 modified "2023-10-14" @default.
- W2115871947 title "The ATP binding site of the chromatin remodeling homolog Lsh is required for nucleosome density and de novo DNA methylation at repeat sequences" @default.
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- W2115871947 doi "https://doi.org/10.1093/nar/gku1371" @default.
- W2115871947 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4330352" @default.
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