Suppr超能文献

RNA折叠导致二级结构重排。

RNA folding causes secondary structure rearrangement.

作者信息

Wu M, Tinoco I

机构信息

Department of Chemistry, University of California, Berkeley, and Structural Biology Department, Lawrence Berkeley National Laboratory, Berkeley, CA 94720-1460, USA.

出版信息

Proc Natl Acad Sci U S A. 1998 Sep 29;95(20):11555-60. doi: 10.1073/pnas.95.20.11555.

Abstract

The secondary structure of the P5abc subdomain (a 56-nt RNA) of the Tetrahymena thermophila group I intron ribozyme has been determined by NMR. Its base pairing in aqueous solution in the absence of magnesium ions is significantly different from the RNA in a crystal but is consistent with thermodynamic predictions. On addition of magnesium ions, the RNA folds into a tertiary structure with greatly changed base pairing consistent with the crystal structure: three Watson-Crick base pairs, three G.U base pairs, and an extra-stable tetraloop are lost. The common assumption that RNA folds by first forming secondary structure and then forming tertiary interactions from the unpaired bases is not always correct.

摘要

嗜热四膜虫I组内含子核酶的P5abc亚结构域(一种56个核苷酸的RNA)的二级结构已通过核磁共振确定。在没有镁离子的水溶液中,其碱基配对与晶体中的RNA有显著差异,但与热力学预测一致。加入镁离子后,RNA折叠成三级结构,碱基配对发生了很大变化,与晶体结构一致:三个沃森-克里克碱基对、三个G·U碱基对和一个超稳定四环消失。RNA先形成二级结构,然后从不配对的碱基形成三级相互作用的常见假设并不总是正确的。

相似文献

1
RNA folding causes secondary structure rearrangement.RNA折叠导致二级结构重排。
Proc Natl Acad Sci U S A. 1998 Sep 29;95(20):11555-60. doi: 10.1073/pnas.95.20.11555.
6
Hinge stiffness is a barrier to RNA folding.铰链刚度是RNA折叠的一个障碍。
J Mol Biol. 2008 Jun 13;379(4):859-70. doi: 10.1016/j.jmb.2008.04.013. Epub 2008 Apr 10.

引用本文的文献

本文引用的文献

2
Solution structure of a GAAA tetraloop receptor RNA.一种GAAA四环受体RNA的溶液结构
EMBO J. 1997 Dec 15;16(24):7490-9. doi: 10.1093/emboj/16.24.7490.
8
RNA tertiary structure mediation by adenosine platforms.腺苷平台介导的RNA三级结构
Science. 1996 Sep 20;273(5282):1696-9. doi: 10.1126/science.273.5282.1696.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验