Mediator-regulated transcription through the +1 nucleosome.

Mediator-regulated transcription through the +1 nucleosome.
复制标题

DOI:
10.1016/j.molcel.2012.10.009
复制
发表时间:
2012-12-28
期刊:
影响因子:
16
通讯作者:
Malik, Sohail
Malik, Sohail
中科院分区:
生物学1区
文献类型:
--
作者:
Nock, Adam;Ascano, Janice M.;Barrero, Maria J.;Malik, Sohail

文献摘要

参考文献

被引文献

相似文献

许多基因在Pol II的水平上受到调节,Pol II被募集到+1核小体上游的无核小体区域。在多个步骤中起作用的介体辅激活因子复合物如何通过启动子近端区域(包括该核小体)影响转录,在很大程度上仍然没有解决。我们已经建立了一个完全定义的体外测定系统,以描绘Pol II穿过+1核小体的机制。我们的研究结果揭示了多个辅因子,特别是调解人和延伸因子SII,在转录到这个核小体的合作功能。这是实现的,部分地,通过一个不寻常的活动SII,改变了启动子近端Pol II的固有催化性能,并在音乐会与调解人,导致核小体DNA的转录增强。我们的数据提供了额外的机制基础,中介功能后,招聘的Pol II,并可能通过核小体介导的启动子近端暂停控制的基因调控。
Many genes are regulated at the level of a Pol II that is recruited to a nucleosome-free region upstream of the +1 nucleosome. How the Mediator coactivator complex, which functions at multiple steps, affects transcription through the promoter proximal region, including this nucleosome, remains largely unaddressed. We have established a fully defined in vitro assay system to delineate mechanisms for Pol II transit across the +1 nucleosome. Our results reveal cooperative functions of multiple cofactors, particularly of Mediator and elongation factor SII, in transcribing into this nucleosome. This is achieved, in part, through an unusual activity of SII that alters the intrinsic catalytic properties of promoter-proximal Pol II and, in concert with the Mediator, leads to enhancement in transcription of nucleosomal DNA. Our data provide additional mechanistic bases for Mediator function after recruitment of Pol II and, potentially, for regulation of genes controlled via nucleosome-mediated promoter-proximal pausing.
DOI: 10.1016/j.cell.2009.12.050
发表时间: 2010-02-19
期刊: Cell
影响因子: 64.5
作者:
Kim J;Guermah M;Roeder RG
通讯作者: Roeder RG
DOI: 10.1006/jmbi.1997.1494
发表时间: 1998-02-13
影响因子: 5.6
作者:
Lowary, PT;Widom, J
通讯作者: Widom, J
DOI: 10.1126/science.1181421
发表时间: 2010-01-15
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Nechaev S;Fargo DC;dos Santos G;Liu L;Gao Y;Adelman K
通讯作者: Adelman K
DOI: 10.1016/j.molcel.2008.06.021
发表时间: 2008-08-08
期刊: MOLECULAR CELL
影响因子: 16
作者:
Esnault, Cyril;Ghavi-Helm, Yad;Werner, Michel
通讯作者: Werner, Michel
DOI: 10.1016/0092-8674(94)90242-9
发表时间: 1994-04-08
期刊: CELL
影响因子: 64.5
作者:
GOODRICH, JA;TJIAN, R
通讯作者: TJIAN, R