Suppr超能文献

用于RNA微螺旋结合的肽基序的功能分析表明了RNA结合结构域的新家族。

Functional analysis of peptide motif for RNA microhelix binding suggests new family of RNA-binding domains.

作者信息

Ribas de Pouplana L, Buechter D, Sardesai N Y, Schimmel P

机构信息

The Skaggs Institute for Chemical Biology and Departments of Molecular Biology and Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.

出版信息

EMBO J. 1998 Sep 15;17(18):5449-57. doi: 10.1093/emboj/17.18.5449.

Abstract

RNA microhelices that recreate the acceptor stems of transfer RNAs are charged with specific amino acids. Here we identify a two-helix pair in alanyl-tRNA synthetase that is required for RNA microhelix binding. A single point mutation at an absolutely conserved residue in this motif selectively disrupts RNA binding without perturbation of the catalytic site. These results, and findings of similar motifs in the proximity of the active sites of other tRNA synthetases, suggest that two-helix pairs are widespread and provide a structural framework important for contacts with bound RNA substrates.

摘要

能够重现转运RNA受体茎的RNA微螺旋被特定氨基酸负载。我们在此鉴定出丙氨酰-tRNA合成酶中一个RNA微螺旋结合所需的双螺旋对。该基序中一个绝对保守残基处的单点突变选择性地破坏RNA结合,而不干扰催化位点。这些结果,以及在其他tRNA合成酶活性位点附近发现的类似基序,表明双螺旋对广泛存在,并为与结合的RNA底物的接触提供了重要的结构框架。

相似文献

引用本文的文献

1
A Proposal of the Ur-RNAome.原核生物 RNA 组草案。
Genes (Basel). 2023 Nov 29;14(12):2158. doi: 10.3390/genes14122158.

本文引用的文献

2
Structures of RNA-binding proteins.RNA结合蛋白的结构
Q Rev Biophys. 1997 Aug;30(3):195-240. doi: 10.1017/s0033583597003351.
3
Protein fold recognition by prediction-based threading.基于预测穿线法的蛋白质折叠识别
J Mol Biol. 1997 Jul 18;270(3):471-80. doi: 10.1006/jmbi.1997.1101.
7
Structural analysis based on state-space modeling.基于状态空间建模的结构分析。
Protein Sci. 1993 Mar;2(3):305-14. doi: 10.1002/pro.5560020302.

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