## Abstract Growth of __Escherichia coli__ 044 K 74 in liquid medium of raised osmotic strength was stimulated by exogenous L‐carnitine, crotonobetaine and γ‐butyrobetaine, respectively. L‐Carnitine was accumulated within the cells in dependence on the salt concentration of the media. Osmotic stres
Regulation of L-carnitine metabolism in Escherichia coli
✍ Scribed by Kirsten Jung; Heinrich Jung; Prof. Dr Hans-Peter Kleber
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 439 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0233-111X
No coin nor oath required. For personal study only.
✦ Synopsis
The metabolization of L-carnitine was studied using whole cells of Escherichia coli 044 K74. It showed features of an epigenetical control. L-carnitine and crotonobetaine were able to induce the carnitine-reducing system. Oxygen and nitrate as electron acceptors, y-butyrobetaine as find pro-' duct of carnitine transformation in E . coli as well as glucose repress the carnitine metabolization.
Other betaines and structurally related compounds did not show any effect neither as inductors nor as repressors.
📜 SIMILAR VOLUMES
## Abstract The uptake of L‐carnitine by __Escherichia coli__044 K 74 which is able to metabolize L‐carnitine to γ‐butyrobetaine under anaerobic conditions was studied. The uptake system of __E. coli__ was induced in the presence of L‐carnitine or crotonobetaine. The optimum influx of L‐carnitine w
## Abstract The aim was to understand how interaction of the central carbon and the secondary carnitine metabolisms is affected under salt stress and its effect on the production of L‐carnitine by __Escherichia coli__. The biotransformation of crotonobetaine into L‐carnitine by resting cells of __E
Der Stoffuechsel des L( -)-Carnitins wurde an einern aus Hsttcndarm isolierteii Stamm 1-011 X:scherichia coli und an R. coli K12 unter aeroben und anaeroben Bedingungen ini Hinblick auf die Entstehung von L-Carnitinmangel untersucht. Unter aeroben Wachstumsbedingungen unterlag drts L-Carnitinmolekbl
The genes involved in methionine biosynthesis are scattered throughout the Escherichia coli chromosome and are controlled in a similar but not coordinated manner. The product of the metJ gene and S-adenosylmethionine are involved in the repression of this 'regulon'.