Suppr超能文献

枯草芽孢杆菌中乌头酸酶合成的调控:诱导、反馈阻遏和分解代谢物阻遏。

Regulation of aconitase synthesis in Bacillus subtilis: induction, feedback repression, and catabolite repression.

作者信息

Ohné M

出版信息

J Bacteriol. 1974 Mar;117(3):1295-305. doi: 10.1128/jb.117.3.1295-1305.1974.

Abstract

The synthesis of aconitase in Bacillus subtilis wild-type and different citric acid cycle mutants has been studied and the influence of various growth conditions examined. Aconitase is induced by citrate and precursors of citrate and repressed by glutamate. Induction and repression counteract each other, and at equimolar concentrations of citrate and glutamate, aconitase synthesis is unaffected. Induction by citrate can partly overcome catabolite repression of aconitase. Isocitrate dehydrogenase show endogenous induction of aconitase due to citrate accumulation. Leaky mutants defective in citrate synthase and aconitase cannot be induced by citrate, which indicates that they carry a regulatory mutation. The complex regulation of aconitase is discussed with reference to the participation of this enzyme in glutamate biosynthesis and energy metabolism.

摘要

对枯草芽孢杆菌野生型及不同柠檬酸循环突变体中乌头酸酶的合成进行了研究,并考察了各种生长条件的影响。乌头酸酶由柠檬酸盐及柠檬酸盐前体诱导产生,并受谷氨酸抑制。诱导和抑制相互抵消,在柠檬酸盐和谷氨酸等摩尔浓度下,乌头酸酶的合成不受影响。柠檬酸盐诱导可部分克服乌头酸酶的分解代谢阻遏。由于柠檬酸盐积累,异柠檬酸脱氢酶显示出乌头酸酶的内源性诱导。柠檬酸合酶和乌头酸酶有缺陷的渗漏突变体不能被柠檬酸盐诱导,这表明它们携带调控突变。参照该酶在谷氨酸生物合成和能量代谢中的参与情况,对乌头酸酶的复杂调控进行了讨论。

相似文献

7
Anaerobic regulation of Bacillus subtilis Krebs cycle genes.枯草芽孢杆菌三羧酸循环基因的厌氧调控
J Bacteriol. 1998 Jul;180(13):3304-11. doi: 10.1128/JB.180.13.3304-3311.1998.

引用本文的文献

1
Complex regulation of the Bacillus subtilis aconitase gene.枯草芽孢杆菌乌头酸酶基因的复杂调控
J Bacteriol. 2003 Mar;185(5):1672-80. doi: 10.1128/JB.185.5.1672-1680.2003.
4
Anaerobic regulation of Bacillus subtilis Krebs cycle genes.枯草芽孢杆菌三羧酸循环基因的厌氧调控
J Bacteriol. 1998 Jul;180(13):3304-11. doi: 10.1128/JB.180.13.3304-3311.1998.
7
Rhizobium tropici chromosomal citrate synthase gene.热带根瘤菌染色体柠檬酸合酶基因
Appl Environ Microbiol. 1995 Nov;61(11):3992-7. doi: 10.1128/aem.61.11.3992-3997.1995.

本文引用的文献

2
REQUIREMENTS FOR TRANSFORMATION IN BACILLUS SUBTILIS.枯草芽孢杆菌转化的要求。
J Bacteriol. 1961 May;81(5):741-6. doi: 10.1128/jb.81.5.741-746.1961.

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