Modification of enhancer chromatin: what, how, and why?
Modification of enhancer chromatin: what, how, and why?
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DOI:
10.1016/j.molcel.2013.01.038
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发表时间:
2013-03-07
期刊:
影响因子:
16
通讯作者:
Wysocka, Joanna
中科院分区:
文献类型:
--
作者:
Calo, Eliezer;Wysocka, Joanna
Emergence of form and function during embryogenesis arises in large part through cell type- and cell state- specific variation in gene expression patterns, mediated by specialized cis-regulatory elements called enhancers. Recent large-scale epigenomic mapping revealed unexpected complexity and dynamics of enhancer utilization patterns, with 400,000 putative human enhancers annotated by the ENCODE project alone. These large-scale efforts were largely enabled through understanding that enhancers share certain stereotypical chromatin features. However, an important question still lingers: What is the functional significance of enhancer chromatin modification? Here we give an overview of enhancer-associated modifications of histones and DNA, and discuss enzymatic activities involved in their dynamic deposition and removal. We describe potential downstream effectors of these marks and propose models for exploring functions of chromatin modification in regulating enhancer activity during development.
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