Systematic identification of proteins binding to chromatin-embedded ubiquitylated H2B reveals recruitment of SWI/SNF to regulate transcription.

Abstract:

:Chromatin posttranslational modifications (PTMs), including monoubiquitylation of histone H2B on lysine 120 (H2Bub1), play a major role in regulating genome functions. To elucidate the molecular mechanisms of H2Bub1 activity, a chromatin template uniformly containing H2Bub1 was used as an affinity matrix to identify preferentially interacting human proteins. Over 90 such factors were found, including proteins and protein complexes associated with transcription, RNA posttranscriptional modifications, and DNA replication and repair. Notably, we found that the SWI/SNF chromatin remodeling complex associates preferentially with H2Bub1-rich chromatin. Moreover, SWI/SNF is required for optimal transcription of a subset of genes that are selectively dependent on H2Bub1. Our findings substantially expand the known H2Bub1 interactome and provide insights into the functions of this PTM in mammalian gene regulation.

journal_name

Cell Rep

journal_title

Cell reports

authors

Shema-Yaacoby E,Nikolov M,Haj-Yahya M,Siman P,Allemand E,Yamaguchi Y,Muchardt C,Urlaub H,Brik A,Oren M,Fischle W

doi

10.1016/j.celrep.2013.07.014

subject

Has Abstract

pub_date

2013-08-15 00:00:00

pages

601-8

issue

3

issn

2211-1247

pii

S2211-1247(13)00361-6

journal_volume

4

pub_type

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