Nucleosome distortion as a possible mechanism of transcription activation domain function.

Nucleosome distortion as a possible mechanism of transcription activation domain function.
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DOI:
10.1186/s13072-016-0092-2
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发表时间:
2016
影响因子:
3.9
通讯作者:
Erkine AM
Erkine AM
中科院分区:
生物学2区
文献类型:
--
作者:
Erkina TY;Erkine AM

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自基因特异性激活因子中的转录激活结构域(AD)被发现以来的三十多年里,其功能机制仍然是个谜。然而,被广泛接受的由AD直接募集共激活因子和基础转录机制组分的模型并不总是与天然和合成AD的短尺寸但非常高的序列随机性和内在结构紊乱相容。在这篇综述中,我们制定了一个替代和互补的模型的基础上,序列的随机性和固有的结构紊乱的广告是必要的瞬时扭曲与启动子核小体的相互作用,触发启动子核小体易位,随后基因激活。
After more than three decades since the discovery of transcription activation domains (ADs) in gene-specific activators, the mechanism of their function remains enigmatic. The widely accepted model of direct recruitment by ADs of co-activators and basal transcriptional machinery components, however, is not always compatible with the short size yet very high degree of sequence randomness and intrinsic structural disorder of natural and synthetic ADs. In this review, we formulate the basis for an alternative and complementary model, whereby sequence randomness and intrinsic structural disorder of ADs are necessary for transient distorting interactions with promoter nucleosomes, triggering promoter nucleosome translocation and subsequently gene activation.
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