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Molecular basis of RNA polymerase promoter specificity switch revealed through studies of Thermus bacteriophage transcription regulator

机译:RNA聚合酶启动子的分子基础通过研究特异性切换显示栖热菌属噬菌体转录监管机构

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摘要

Transcription initiation is the central point of gene expression regulation. Understanding of molecular mechanism of transcription regulation requires, ultimately, the structural understanding of consequences of transcription factors binding to DNA-dependent RNA polymerase (RNAP), the enzyme of transcription. We recently determined a structure of a complex between transcription factor gp39 encoded by a Thermus bacteriophage and Thermus RNAP holoenzyme. In this addendum to the original publication, wehighlight structural insights that explain the ability of gp39 to act as an RNAP specificity switch which inhibits transcription initiation from a major class of bacterial promoters, while allowing transcription from a minor promoter class to continue.
机译:转录起始的中心点基因表达调控。转录调控的分子机制要求,最终的结构了解转录的后果因素绑定RNA聚合酶(RNAP),酶的转录。之间的一个复杂的结构决定的转录因子编码gp39栖热菌属噬菌体和栖热菌属RNAP全酶。这个附录原来的出版,wehighlight结构解释的见解gp39充当RNAP特异性的能力抑制转录起始的开关从细菌的主要类促进剂,虽然允许从轻微的启动子转录类继续。

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