Genome-wide analysis of H3.3 dissociation reveals high nucleosome turnover at distal regulatory regions of embryonic stem cells
2014
Background
The histone variant H3.3 plays a critical role in maintaining the pluripotency of embryonic stem cells (ESCs) by regulating gene expression programs important for lineage specification. H3.3 is deposited by various chaperones at regulatory sites, gene bodies, and certain heterochromatic sites such as telomeres and centromeres. Using Tet-inhibited expression of epitope-tagged H3.3 combined with ChIP-Seq we undertook genome-wide measurements of H3.3 dissociation rates across the ESC genome and examined the relationship between H3.3-nucleosome turnover and ESC-specific transcription factors, chromatin modifiers, and epigenetic marks.
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