A transient conformation facilitates ligand binding to the adenine riboswitch.
A transient conformation facilitates ligand binding to the adenine riboswitch.
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瞬时构象促进配体与腺嘌呤核糖开关的结合
DOI:
10.1016/j.isci.2021.103512
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发表时间:
2021-12-17
期刊:
影响因子:
5.8
通讯作者:
Liu Y
中科院分区:
文献类型:
--
作者:
Wu L;Chen D;Ding J;Liu Y
RNAs adopt various conformations to perform different functions in cells. Incapable of acquiring intermediates, the key initiations of ligand recognition in the adenine riboswitch have not been characterized. In this work, stopped-flow fluorescence was used to track structural switches in the full-length adenine riboswitch in real time. We used PLOR (position-selective labeling of RNA) to incorporate fluorophores into desired positions in the RNA. The switching sequence P1 responded to adenine more rapidly than helix P4 and the binding pocket, followed by stabilization of the binding pocket, P4, and annealing of P1. Moreover, a transient intermediate consisting of an unwound P1 was detected during adenine binding. These events were observed in both the WT riboswitch and a functional mutant. The findings provide insight into the conformational changes of the riboswitch RNA triggered by a ligand. Real-time tracking of the adenine riboswitch at nucleotide resolution A transient conformation with unwound P1 is identified in the adenine riboswitch Helix P1 responds to ligand quicker than the binding pocket or expression platform Biological sciences; Biochemistry; Molecular biology; Structural biology
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影响因子:
4.1
作者:
Nozinovic S;Reining A;Kim YB;Noeske J;Schlepckow K;Wöhnert J;Schwalbe H
通讯作者:
Schwalbe H
DOI:
10.1073/pnas.1218062110
发表时间:
2013-03-12
影响因子:
11.1
作者:
Haller, Andrea;Altman, Roger B.;Micura, Ronald
通讯作者:
Micura, Ronald
影响因子:
15
作者:
Eubanks, Christopher S.;Zhao, Bo;Hargrove, Amanda E.
通讯作者:
Hargrove, Amanda E.
影响因子:
14.9
作者:
Lund, Paul E.;Chatterjee, Surajit;Walter, Nils G.
通讯作者:
Walter, Nils G.
影响因子:
14.9
作者:
Morten MJ;Lopez SG;Steinmark IE;Rafferty A;Magennis SW
通讯作者:
Magennis SW