Watching the bacterial RNA polymerase transcription reaction by time-dependent soak-trigger-freeze X-ray crystallography.

Watching the bacterial RNA polymerase transcription reaction by time-dependent soak-trigger-freeze X-ray crystallography.
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DOI:
10.1016/bs.enz.2021.06.009
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发表时间:
2021
期刊:
The Enzymes
影响因子:
--
通讯作者:
Murakami KS
Murakami KS
中科院分区:
其他
文献类型:
--
作者:
Shin Y;Murakami KS

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RNA聚合酶(RNAP)是基因表达的核心酶,将DNA转录为RNA。所有的细胞生物体合成RNA与高度保守的多亚基DNA依赖的RNAP,除了线粒体RNA转录,这是由一个单亚基RNAP进行。六十多年的广泛研究阐明了细胞RNAP的结构和功能。本文简要介绍了细菌RNAP的结构特征,以及“时间依赖浸泡-触发-冻结X射线晶体学”实验方法的原理,该方法可以在原子分辨率下真实的观察RNA合成反应,从而阐明细胞RNAP转录的基本机制。
RNA polymerase (RNAP) is the central enzyme of gene expression, which transcribes DNA to RNA. All cellular organisms synthesize RNA with highly conserved multi-subunit DNA-dependent RNAPs, except mitochondrial RNA transcription, which is carried out by a single-subunit RNAP. Over sixty years of extensive research elucidated the structures and functions of cellular RNAPs. In this review, we introduce a brief structural feature of bacterial RNAP, the most well characterized model enzyme, and a principle of novel experimental approach known as “Time-dependent soak-trigger-freeze X-ray crystallography” which can observe RNA synthesis reaction at atomic resolution in real time for elucidating the fundamental mechanism of cellular RNAP transcription.
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