Riboswitches: structures and mechanisms.

Riboswitches: structures and mechanisms.
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DOI:
10.1101/cshperspect.a003533
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发表时间:
2011-06-01
影响因子:
7.2
通讯作者:
Batey RT
Batey RT
中科院分区:
生物学1区
文献类型:
--
作者:
Garst AD;Edwards AL;Batey RT

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假设的 RNA 世界的一个关键特征是能够根据环境线索控制化学过程。核糖开关是基于 RNA 的生命中复杂的调控机制的可行候选者。现代世界中的这些调控元件最常见于细菌 mRNA 的 5'-非翻译区,直接与代谢物相互作用,作为通过二级结构开关调节编码区表达的手段。在这篇综述中,我们重点关注这些 RNA 如何折叠成复杂结构的最新见解,该结构能够识别特定的小分子化合物并对下游序列施加调节控制,重点是转录调节。
A critical feature of the hypothesized RNA world would have been the ability to control chemical processes in response to environmental cues. Riboswitches present themselves as viable candidates for a sophisticated mechanism of regulatory control in RNA-based life. These regulatory elements in the modern world are most commonly found in the 5′-untranslated regions of bacterial mRNAs, directly interacting with metabolites as a means of regulating expression of the coding region via a secondary structural switch. In this review, we focus on recent insights into how these RNAs fold into complex architectures capable of both recognizing a specific small molecule compound and exerting regulatory control over downstream sequences, with an emphasis on transcriptional regulation.
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