A structural perspective of human RNA polymerase III.

A structural perspective of human RNA polymerase III.
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人类RNA聚合酶III的结构视角

DOI:
10.1080/15476286.2021.2022293
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发表时间:
2022
期刊:
影响因子:
4.1
通讯作者:
Wu J
Wu J
中科院分区:
生物学3区
文献类型:
--
作者:
Wang Q;Lei M;Wu J

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RNA聚合酶III(POL III)是在所有真核生物中保守的大型多亚基复合物,在产生各种短的非编码RNA中起着至关重要的作用,例如TRNA,5S RRNA和U6 SNRNA转录本。 POL III包括酵母和人类的17个亚基,其中有10个亚基核心和7个外围亚基。由于其规模和复杂性,Pol III对结构生物学家提出了巨大的挑战。酵母菌pol III的第一个原子低温电子显微镜结构在2015年报道。在过去的几年中,内源性提取物和纯化程序的优化以及低温电子显微镜的技术和方法学进步,使我们可以首先查看人类POL III组织的前所未有的细节。在这里,我们回顾了人类Pol III的结构研究,并根据我们目前对其在真核转录中的作用的理解进行了讨论。
ABSTRACT RNA polymerase III (Pol III) is a large multisubunit complex conserved in all eukaryotes that plays an essential role in producing a variety of short non-coding RNAs, such as tRNA, 5S rRNA and U6 snRNA transcripts. Pol III comprises of 17 subunits in both yeast and human with a 10-subunit core and seven peripheral subunits. Because of its size and complexity, Pol III has posed a formidable challenge to structural biologists. The first atomic cryogenic electron microscopy structure of yeast Pol III leading to the canonical view was reported in 2015. Within the last few years, the optimization of endogenous extract and purification procedure and the technical and methodological advances in cryogenic electron microscopy, together allow us to have a first look at the unprecedented details of human Pol III organization. Here, we look back on the structural studies of human Pol III and discuss them in the light of our current understanding of its role in eukaryotic transcription.
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