The promise of cryo-EM to explore RNA structural dynamics.

The promise of cryo-EM to explore RNA structural dynamics.
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DOI:
10.1016/j.jmb.2022.167802
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发表时间:
2022-09-30
影响因子:
5.6
通讯作者:
Kieft, Jeffrey S.
Kieft, Jeffrey S.
中科院分区:
生物学2区
文献类型:
--
作者:
Bonilla, Steve L.;Kieft, Jeffrey S.

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构象动力学对大分子功能至关重要。RNA当然也是如此,它经历程序化构象动力学的能力对于创造和调节复杂的生物过程至关重要。然而,方法,以方便地和同时询问的结构和构象动力学的完全功能的RNA在隔离和与蛋白质的复合物一直没有历史。由于其成像和分类单个颗粒的能力,低温电子显微镜(cryo-EM)有可能解决这一差距,并可能特别适合探索生物活性RNA的三维折叠内的结构动力学。我们讨论的可能性和目前的限制,应用冷冻EM同时研究RNA的结构和构象动力学,并提出一个例子,说明这(截至目前)还没有完全实现的潜力。
Conformational dynamics are essential to macromolecular function. This is certainly true of RNA, whose ability to undergo programmed conformational dynamics is essential to create and regulate complex biological processes. However, methods to easily and simultaneously interrogate both the structure and conformational dynamics of fully functional RNAs in isolation and in complex with proteins have not historically been available. Due to its ability to image and classify single particles, cryogenic electron microscopy (cryo-EM) has the potential to address this gap and may be particularly amenable to exploring structural dynamics within the three-dimensional folds of biologically active RNAs. We discuss the possibilities and current limitations of applying cryo-EM to simultaneously study RNA structure and conformational dynamics, and present one example that illustrates this (as of yet) not fully realized potential.
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