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磷酸烯醇丙酮酸:葡萄糖磷酸转移酶系统在细菌中的分布

Distribution of the phosphoenolpyruvate: glucose phosphotransferase system in bacteria.

作者信息

Romano A H, Eberhard S J, Dingle S L, McDowell T D

出版信息

J Bacteriol. 1970 Nov;104(2):808-13. doi: 10.1128/jb.104.2.808-813.1970.

Abstract

A survey of the occurrence of the phosphoenolpyruvate-dependent glucose phosphotransferase system was carried out in a number of bacteria, representing both gram-positive and gram-negative facultative anaerobic and strictly aerobic types. The system was found to be present in representatives of genera that are characteristically facultative anaerobes, but the system was absent in members of those genera that are strictly aerobic. Thus, although the phosphoenolpyruvate phosphotransferase system is an important system for the transport of sugars in bacteria carrying out anaerobic glycolysis, it plays no role in sugar transport by those organisms having a strictly oxidative physiology. A fundamentally different system, probably not involving phosphorylation during transport, is indicated in this latter group.

摘要

对多种细菌进行了磷酸烯醇丙酮酸依赖性葡萄糖磷酸转移酶系统出现情况的调查,这些细菌代表革兰氏阳性和革兰氏阴性兼性厌氧菌以及严格需氧菌类型。发现该系统存在于典型兼性厌氧菌属的代表菌株中,但在严格需氧菌属的成员中不存在。因此,尽管磷酸烯醇丙酮酸磷酸转移酶系统是进行厌氧糖酵解的细菌中糖转运的重要系统,但它在具有严格氧化生理特性的生物体的糖转运中不起作用。后一组生物体显示出一种根本不同的系统,可能在转运过程中不涉及磷酸化。

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On the mechanism of the intestinal absorption of sugars.关于糖类的肠道吸收机制
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