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- W2050156039 abstract "Chromatin remodeling enzymes use the energy of ATP hydrolysis to alter histone–DNA contacts and regulate DNA-based processes in eukaryotes. Whether different subfamilies of remodeling complexes generate distinct products remains uncertain. We have developed a protocol to analyze nucleosome remodeling on individual products formed in vitro . We used a DNA methyltransferase to examine DNA accessibility throughout nucleosomes that had been remodeled by the ISWI and SWI/SNF families of enzymes. We confirmed that ISWI-family enzymes mainly created patterns of accessibility consistent with canonical nucleosomes. In contrast, SWI/SNF-family enzymes generated widespread DNA accessibility. The protection patterns created by these enzymes were usually located at the extreme ends of the DNA and showed no evidence for stable loop formation on individual molecules. Instead, SWI/SNF family proteins created extensive accessibility by generating heterogeneous products that had fewer histone–DNA contacts than a canonical nucleosome, consistent with models in which a canonical histone octamer has been ‘pushed’ off of the end of the DNA." @default.
- W2050156039 created "2016-06-24" @default.
- W2050156039 creator A5014149423 @default.
- W2050156039 creator A5022487572 @default.
- W2050156039 creator A5025425215 @default.
- W2050156039 creator A5088347458 @default.
- W2050156039 date "2009-06-30" @default.
- W2050156039 modified "2023-10-10" @default.
- W2050156039 title "Analysis of individual remodeled nucleosomes reveals decreased histone–DNA contacts created by hSWI/SNF" @default.
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- W2050156039 doi "https://doi.org/10.1093/nar/gkp524" @default.
- W2050156039 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2760786" @default.
- W2050156039 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19567737" @default.
- W2050156039 hasPublicationYear "2009" @default.
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