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Genome-wide Nucleosome Specificity and Directionality of Chromatin Remodelers

Authors: Yen, Kuangyu; Vinayachandran, Vinesh; Batta, Kiran; Koerber, R Thomas; Pugh, B Franklin;

Genome-wide Nucleosome Specificity and Directionality of Chromatin Remodelers

Abstract

How chromatin remodelers cooperate to organize nucleosomes around the start and end of genes is not known. We determined the genome-wide binding of remodeler complexes SWI/SNF, RSC, ISW1a, ISW1b, ISW2, and INO80 to individual nucleosomes in Saccharomyces, and determined their functional contributions to nucleosome positioning through deletion analysis. We applied ultra-high-resolution ChIP-exo mapping to Isw2 to determine its subnucleosomal orientation and organization on a genomic scale. Remodelers interacted with selected nucleosome positions relative to the start and end of genes and produced net directionality in moving nucleosomes either away or toward nucleosome-free regions at the 5' and 3' ends of genes. Isw2 possessed a subnucleosomal organization in accord with biochemical and crystallographic-based models that place its linker binding region within promoters and abutted against Reb1-bound locations. Together, these findings reveal a coordinated position-specific approach taken by remodelers to organize genic nucleosomes into arrays.

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Keywords

Saccharomyces cerevisiae Proteins, Non-P.H.S., Saccharomyces cerevisiae, Research Support, N.I.H., Research Support, N.I.H., Extramural, Journal Article, Adenosine Triphosphatases, Genome, Manchester Cancer Research Centre, Biochemistry, Genetics and Molecular Biology(all), Extramural, Chromatin Assembly and Disassembly, ResearchInstitutes_Networks_Beacons/mcrc; name=Manchester Cancer Research Centre, Nucleosomes, DNA-Binding Proteins, Fungal, Exodeoxyribonucleases, Genetic Techniques, U.S. Gov't, Genome, Fungal, Research Support, U.S. Gov't, Non-P.H.S., Genome-Wide Association Study, Transcription Factors

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    popularity
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    Top 1%
    influence
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    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
293
Top 1%
Top 10%
Top 1%
hybrid