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Rpb5 a subunit shared by eukaryotic RNA polymerases cooperates with prefoldin-like Bud27/URI

机译:Rpb5是真核RNA聚合酶共有的一个亚基与前折叠蛋白样Bud27 / URI协同作用

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摘要

Rpb5 is one of the five common subunits to all eukaryotic RNA polymerases, which is conserved in archaea, but not in bacteria. Among these common subunits, it is the only one that is not interchangeable between yeasts and humans, and accounts for the functional incompatibility of yeast and human subunits. Rpb5 has been proposed to contribute to the gene-specific activation of RNA pol II, notably during the infectious cycle of the hepatitis B virus, and also to participate in general transcription mediated by all eukaryotic RNA pol. The structural analysis of Rpb5 and its interaction with different transcription factors, regulators and DNA, accounts for Rpb5 being necessary to maintain the correct conformation of the shelf module of RNA pol II, which favors the proper organization of the transcription bubble and the clamp closure of the enzyme.In this work we provide details about subunit Rpb5's structure, conservation and the role it plays in transcription regulation by analyzing the different interactions with several factors, as well as its participation in the assembly of the three RNA pols, in cooperation with prefoldin-like Bud27/URI.
机译:Rpb5是所有真核RNA聚合酶的五个常见亚基之一,在古细菌中保守,但在细菌中不保守。在这些常见的亚基中,它是唯一在酵母和人之间不可互换的亚基,并解释了酵母和人亚基的功能不相容性。已经提出Rpb5有助于RNA pol II的基因特异性活化,特别是在乙型肝炎病毒的感染周期中,并且还参与所有真核RNA pol介导的一般转录。 Rpb5的结构分析及其与不同转录因子,调节剂和DNA的相互作用说明,Rpb5对维持RNA pol II货架模块的正确构象是必要的,这有利于转录泡的正确组织和DNA的钳位封闭。在这项工作中,我们通过分析与多种因素的不同相互作用以及它与prefoldin的结合参与了三个RNA pols的组装,详细介绍了Rpb5亚基的结构,保守性及其在转录调控中的作用。像Bud27 / URI。

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