Suppr超能文献

在uncH基因上存在缺陷的大肠杆菌突变体。

Escherichia coli mutants defective in the uncH gene.

作者信息

Humbert R, Brusilow W S, Gunsalus R P, Klionsky D J, Simoni R D

出版信息

J Bacteriol. 1983 Jan;153(1):416-22. doi: 10.1128/jb.153.1.416-422.1983.

Abstract

Plasmids carrying cloned segments of the unc operon of Escherichia coli have been used in genetic complementation analyses to identify three independent mutants defective in the uncH gene, which codes for the delta subunit of the ATP synthetase. Mutations in other unc genes have also been mapped by this technique. ATPase activity was present in extracts of the uncH mutants, but the enzyme was not as tightly bound to the membrane as it was in the parental strain. ATP-dependent membrane energization was absent in membranes isolated from the uncH mutants and could not be restored by adding normal F1 ATPase from the wild-type strain. F1 ATPase prepared from uncH mutants could not restore ATP-dependent membrane energization when added to wild-type membranes depleted of F1. Membranes of the uncH mutants were not rendered proton permeable as a result of washing with low-ionic-strength buffer.

摘要

携带大肠杆菌unc操纵子克隆片段的质粒已用于遗传互补分析,以鉴定uncH基因中有缺陷的三个独立突变体,该基因编码ATP合成酶的δ亚基。其他unc基因中的突变也已通过该技术进行定位。uncH突变体的提取物中存在ATP酶活性,但该酶与膜的结合不如亲本菌株紧密。从uncH突变体中分离的膜中不存在ATP依赖性膜能量化,并且不能通过添加野生型菌株的正常F1 ATP酶来恢复。当添加到耗尽F1的野生型膜中时,从uncH突变体制备的F1 ATP酶不能恢复ATP依赖性膜能量化。用低离子强度缓冲液洗涤后,uncH突变体的膜不会变得质子可渗透。

相似文献

1
Escherichia coli mutants defective in the uncH gene.在uncH基因上存在缺陷的大肠杆菌突变体。
J Bacteriol. 1983 Jan;153(1):416-22. doi: 10.1128/jb.153.1.416-422.1983.

引用本文的文献

1
Analysis of an N-terminal deletion in subunit a of the Escherichia coli ATP synthase.大肠杆菌ATP合酶a亚基N端缺失的分析
J Bioenerg Biomembr. 2017 Apr;49(2):171-181. doi: 10.1007/s10863-017-9694-z. Epub 2017 Jan 11.
6
ATP synthesis without R210 of subunit a in the Escherichia coli ATP synthase.大肠杆菌ATP合酶中缺少a亚基R210时的ATP合成
Biochim Biophys Acta. 2008 Jan;1777(1):32-8. doi: 10.1016/j.bbabio.2007.11.004. Epub 2007 Nov 19.

本文引用的文献

2
Linkage map of Escherichia coli K-12, edition 6.大肠杆菌K-12连锁图谱,第6版。
Microbiol Rev. 1980 Mar;44(1):1-56. doi: 10.1128/mr.44.1.1-56.1980.

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