Suppr超能文献

β折叠中交叉连接的手性

Handedness of crossover connections in beta sheets.

作者信息

Richardson J S

出版信息

Proc Natl Acad Sci U S A. 1976 Aug;73(8):2619-23. doi: 10.1073/pnas.73.8.2619.

Abstract

In a crossover connection, the polypeptide chain leaves one end of a beta sheet, forms a loop of any length and any conformation, and reenters the same beta sheet from the opposite end. Of the 85 examples of crossover connections which occur in the known protein structures, 83 are righthanded and only two are lefthanded. It is proposed that consistent handedness, even in long irregular loops, could be produced by the preferred twist direction of extended chain and the righthandedness of alpha-helices, provided certain conditions hold during the protein folding process.

摘要

在交叉连接中,多肽链从β折叠的一端离开,形成任意长度和任意构象的环,然后从相反的一端重新进入同一β折叠。在已知蛋白质结构中出现的85个交叉连接实例中,83个是右手性的,只有两个是左手性的。有人提出,只要在蛋白质折叠过程中满足某些条件,即使在长的不规则环中,一致的手性也可能由延伸链的优选扭曲方向和α螺旋的右手性产生。

相似文献

1
Handedness of crossover connections in beta sheets.β折叠中交叉连接的手性
Proc Natl Acad Sci U S A. 1976 Aug;73(8):2619-23. doi: 10.1073/pnas.73.8.2619.
3
Analysis and predication of structural motifs in the glycolytic enzymes.糖酵解酶中结构基序的分析与预测
Philos Trans R Soc Lond B Biol Sci. 1981 Jun 26;293(1063):177-89. doi: 10.1098/rstb.1981.0071.
5
The taxonomy of protein structure.蛋白质结构的分类学。
J Mol Biol. 1977 Jan 5;109(1):99-129. doi: 10.1016/s0022-2836(77)80048-x.
6
The structure of a yeast hexokinase monomer and its complexes with substrates at 2.7-A resolution.
Proc Natl Acad Sci U S A. 1975 Jan;72(1):38-42. doi: 10.1073/pnas.72.1.38.

引用本文的文献

2
Exploration of novel αβ-protein folds through de novo design.通过从头设计探索新型的 αβ-蛋白质折叠。
Nat Struct Mol Biol. 2023 Aug;30(8):1132-1140. doi: 10.1038/s41594-023-01029-0. Epub 2023 Jul 3.
4
Current Approaches in Supersecondary Structures Investigation.当前超二级结构研究方法。
Int J Mol Sci. 2021 Nov 2;22(21):11879. doi: 10.3390/ijms222111879.
5
Exploring Protein Fold Space.探索蛋白质折叠空间。
Biomolecules. 2020 Jan 27;10(2):193. doi: 10.3390/biom10020193.
9
Protein Design: Getting to the bottom of the TIM barrel.
Nat Chem Biol. 2016 Jan;12(1):2-3. doi: 10.1038/nchembio.1987.
10
A Mimivirus Enzyme that Participates in Viral Entry.一种参与病毒进入过程的巨型病毒酶。
Structure. 2015 Jun 2;23(6):1058-65. doi: 10.1016/j.str.2015.03.023. Epub 2015 May 14.

本文引用的文献

2
5
Atomic coordinates for subtilisin BPN' (or Novo).枯草杆菌蛋白酶BPN'(或诺维信)的原子坐标。
Biochem Biophys Res Commun. 1971 Oct 15;45(2):337-44. doi: 10.1016/0006-291x(71)90823-0.
7
The structure of papain.木瓜蛋白酶的结构。
Adv Protein Chem. 1971;25:79-115. doi: 10.1016/s0065-3233(08)60279-x.
8
Carboxypeptidase A: a protein and an enzyme.羧肽酶A:一种蛋白质和一种酶。
Adv Protein Chem. 1971;25:1-78. doi: 10.1016/s0065-3233(08)60278-8.
10
Comparison of super-secondary structures in proteins.蛋白质中超级二级结构的比较。
J Mol Biol. 1973 May 15;76(2):241-56. doi: 10.1016/0022-2836(73)90388-4.

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验