Structural insights into transcription initiation by RNA polymerase II.

Structural insights into transcription initiation by RNA polymerase II.
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DOI:
10.1016/j.tibs.2013.09.002
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发表时间:
2013-12
影响因子:
13.8
通讯作者:
Hahn, Steven
Hahn, Steven
中科院分区:
生物学1区
文献类型:
--
作者:
Gruenberg, Sebastian;Hahn, Steven

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转录调控是控制细胞身份、生长、分化和发育的最重要步骤之一。控制这些过程的许多信号通路最终以核心转录机制为目标,对于蛋白质编码基因来说,核心转录机制由 RNA 聚合酶 II (Pol II) 和通用转录因子 (GTF) 组成。关于核心组件的结构和机制以及它如何与启动子 DNA 和共激活子复合物相互作用的新研究,对启动过程的早期步骤、全基因组结合以及所有核和古细菌 Pols 保守的机制提供了深入的了解。在这里,我们回顾了剖析 Pol II 核心机制架构的最新进展,重点关注转录起始的早期和调控步骤。
Transcriptional regulation is one of the most important steps in control of cell identity, growth, differentiation and development. Many signaling pathways controlling these processes ultimately target the core transcription machinery that, for protein coding genes, consists of RNA polymerase II (Pol II) and the general transcription factors (GTFs). New studies on the structure and mechanism of the core assembly and how it interfaces with promoter DNA and coactivator complexes have given tremendous insight into early steps in the initiation process, genome-wide binding, and mechanisms conserved for all nuclear and archaeal Pols. Here we review recent developments in dissecting the architecture of the Pol II core machinery with a focus on early and regulated steps in transcription initiation.
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