RNA polymerase active center: the molecular engine of transcription.

RNA polymerase active center: the molecular engine of transcription.
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DOI:
10.1146/annurev.biochem.76.052705.164655
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发表时间:
2009
影响因子:
16.6
通讯作者:
Nudler E
Nudler E
中科院分区:
生物学1区
文献类型:
--
作者:
Nudler E

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RNA聚合酶(RNAP)是一种复杂的分子机器,在所有细胞生物中控制基因表达及其调节。为了实现其准确产生基因的全长RNA拷贝的功能,RNAP进行过多的化学反应,并响应细胞条件而经历多种构象变化。这台机器的核心是活动中心-发动机,它由不同的固定和移动部件组成,作为调节信号的最终受体和抑制药物的目标。RNAP的结构和生化表征的最新进展解释了原子水平上的活性中心,并使新的方法来理解整个转录机制,其特殊的保真度和控制。
RNA polymerase (RNAP) is a complex molecular machine that governs gene expression and its regulation in all cellular organisms. To accomplish its function of accurately producing a full length RNA copy of a gene, RNAP performs a plethora of chemical reactions and undergoes multiple conformational changes in response to cellular conditions. At the heart of this machine is the active center - the engine, which is composed of distinct fixed and moving parts that serve as the ultimate acceptor of regulatory signals and target of inhibitory drugs. Recent advances in the structural and biochemical characterization of RNAP explain the active center at the atomic level and enable new approaches to understanding the entire transcription mechanism, its exceptional fidelity and control.
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