DEAH-Box RNA Helicases in Pre-mRNA Splicing.

DEAH-Box RNA Helicases in Pre-mRNA Splicing.
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DEAH-Box RNA解旋酶在前mRNA剪接中的作用

DOI:
10.1016/j.tibs.2020.10.006
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发表时间:
2021-03
影响因子:
13.8
通讯作者:
Zhao R
Zhao R
中科院分区:
生物学1区
文献类型:
--
作者:
De Bortoli F;Espinosa S;Zhao R

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在真核细胞中,前体mRNA剪接是由剪接体催化的,剪接体是一种高度动态的分子机制,在整个剪接周期中经历剧烈的构象和组成重排。这些重要的重排主要是由八个DExD/H-box RNA解旋酶驱动的。有趣的是,参与剪接后期阶段的四种解旋酶都是具有结构相似性的DEAH盒解旋酶。这篇综述旨在提供这些DEAH盒解旋酶的结构和功能的概述,包括最近的冷冻电子显微镜结构的剪接体复合物提供的新信息。
In eukaryotic cells, pre-mRNA splicing is catalyzed by the spliceosome, a highly dynamic molecular machinery that undergoes dramatic conformational and compositional rearrangements throughout the splicing cycle. These crucial rearrangements are largely driven by eight DExD/H-box RNA helicases. Interestingly, the four helicases participating in the late stages of splicing are all DEAH-box helicases that share structural similarities. This review aims to provide an overview of the structure and function of these DEAH-box helicases, including new information provided by recent cryo-electron microscopy structures of the spliceosomal complexes.
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