Suppr超能文献

大肠杆菌甘油转运蛋白的底物特异性和转运特性

Substrate specificity and transport properties of the glycerol facilitator of Escherichia coli.

作者信息

Heller K B, Lin E C, Wilson T H

出版信息

J Bacteriol. 1980 Oct;144(1):274-8. doi: 10.1128/jb.144.1.274-278.1980.

Abstract

The specificity of the glycerol facilitator (glpF) of Escherichia coli was studied with an osmotic method. This transport system allowed the entry of polyols (glycerol and erythritol), pentitols, and hexitols. The analogous sugars were not transported. However, urea, glycine, and DL-glyceraldehyde could use this pathway to enter the cell. The glpF protein allowed the rapid efflux of preequilibrated xylitol. Glycerol surprisingly did not inhibit the uptake of xylitol, and xylitol only slightly reduced the uptake of glycerol. The observation and the insensitivity of the xylitol transport to low temperature suggest that the facilitator behaves as a membrane channel.

摘要

采用渗透法研究了大肠杆菌甘油转运蛋白(glpF)的特异性。该转运系统允许多元醇(甘油和赤藓糖醇)、戊糖醇和己糖醇进入细胞。类似的糖类则不能被转运。然而,尿素、甘氨酸和DL-甘油醛可以利用该途径进入细胞。glpF蛋白能使预平衡的木糖醇快速外流。令人惊讶的是,甘油并不抑制木糖醇的摄取,而木糖醇仅略微降低甘油的摄取。木糖醇转运对低温不敏感这一观察结果表明,该转运蛋白表现为一种膜通道。

相似文献

引用本文的文献

6
Engineering Escherichia coli to Utilize Erythritol as Sole Carbon Source.工程大肠杆菌以赤藓糖醇为唯一碳源。
Adv Sci (Weinh). 2023 May;10(14):e2207008. doi: 10.1002/advs.202207008. Epub 2023 Mar 20.

本文引用的文献

6
Control of permeation to glycerol in cells of Escherichia coli.大肠杆菌细胞中对甘油渗透的控制。
Biochem Biophys Res Commun. 1968 Jul 26;32(2):344-9. doi: 10.1016/0006-291x(68)90392-6.
9
Glycerol dissimilation and its regulation in bacteria.细菌中的甘油异化作用及其调控
Annu Rev Microbiol. 1976;30:535-78. doi: 10.1146/annurev.mi.30.100176.002535.

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