Molecular recognition and function of riboswitches.

Molecular recognition and function of riboswitches.
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核糖开关的分子识别和功能。

DOI:
10.1016/j.sbi.2012.04.005
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发表时间:
2012-06
影响因子:
6.8
通讯作者:
Patel DJ
Patel DJ
中科院分区:
生物学2区
文献类型:
--
作者:
Serganov A;Patel DJ

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称为核糖开关的调节 mRNA 元件通过调节相关基因的表达来响应细胞代谢物浓度的升高。核糖开关通过利用其传感器域的固有三级结构来获得高代谢物选择性。多年来,核糖开关结构和折叠一直是 RNA 领域研究最多的主题之一。最近,单配体和协作双配体传感器的新颖结构拓宽了我们对核糖开关所利用的结构和分子识别原理的了解。结构信息得到了广泛的折叠研究的补充,这些研究为配体活性构象的形成和配体辨别机制提供了一些重要线索。这些研究极大地提高了我们对核糖开关介导的基因表达控制中分子事件的理解,并为干预核糖开关控制的遗传回路提供了分子基础。
Regulatory mRNAs elements termed riboswitches respond to elevated concentrations of cellular metabolites by modulating expression of associated genes. Riboswitches attain their high metabolite selectivity by capitalizing on the intrinsic tertiary structures of their sensor domains. Over the years, riboswitch structure and folding have been amongst the most researched topics in the RNA field. Most recently, novel structures of single- and cooperative double-ligand sensors have broadened our knowledge of architectural and molecular recognition principles exploited by riboswitches. The structural information has been complemented by extensive folding studies, which have provided several important clues on the formation of ligand-competent conformations and mechanisms of ligand discrimination. These studies have greatly improved our understanding of molecular events in riboswitch-mediated gene expression control and provided the molecular basis for intervention into riboswitch-controlled genetic circuits.
DOI: 10.1073/pnas.1111701108
发表时间: 2011-09-06
影响因子: 11.1
作者:
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