Phosphoenolpyruvate: Sugar phosphotransferase systems and sugar metabolism in Brevibacterium flavum.
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چکیده
منابع مشابه
Regulation of sugar transport via the multiple sugar metabolism operon of Streptococcus mutans by the phosphoenolpyruvate phosphotransferase system.
In this report, we provide evidence that the transport of sugars in Streptococcus mutans via the multiple sugar metabolism system is regulated by the phosphoenolpyruvate phosphotransferase system. A ptsI-defective mutant (DC10), when grown on the multiple sugar metabolism system substrate raffinose, exhibited reduced growth, transport, and glycolytic activity with raffinose relative to the pare...
متن کاملCarbohydrate transporters of the bacterial phosphoenolpyruvate: sugar phosphotransferase system (PTS).
The glucose transporter of Escherichia coli couples translocation with phosphorylation of glucose. The IICB(Glc) subunit spans the membrane eight times. Split, circularly permuted and cyclized forms of IICB(Glc) are described. The split variant was 30 times more active when the two proteins were encoded by a dicistronic mRNA than by two genes. The stability and activity of circularly permuted f...
متن کاملRegulation of glycerol uptake by the phosphoenolpyruvate-sugar phosphotransferase system in Bacillus subtilis.
Enteric bacteria have been previously shown to regulate the uptake of certain carbohydrates (lactose, maltose, and glycerol) by an allosteric mechanism involving the catalytic activities of the phosphoenolpyruvate-sugar phosphotransferase system. In the present studies, a ptsI mutant of Bacillus subtilis, possessing a thermosensitive enzyme I of the phosphotransferase system, was used to gain e...
متن کاملThe Histidine-Phosphocarrier Protein of the Phosphoenolpyruvate: Sugar Phosphotransferase System of Bacillus sphaericus Self-Associates
The phosphotransferase system (PTS) is involved in the use of carbon sources in bacteria. Bacillus sphaericus, a bacterium with the ability to produce insecticidal proteins, is unable to use hexoses and pentoses as the sole carbon source, but it has ptsHI genes encoding the two general proteins of the PTS: enzyme I (EI) and the histidine phosphocarrier (HPr). In this work, we describe the bioph...
متن کاملRegulation of sugar transport by the bacterial phosphoenolpyruvate: glucose phosphotransferase system.
It is now generally accepted that the bacterial PTS serves several important and diverse roles in bacterial cell physiology (for a review see Postma & Roseman, 1976). The best-defined function of the PTS is to translocate its sugar substrates across the cytoplasmic membrane with concomitant phosphorylation of these sugars. In addition, the system is involved in chemotaxis toward its substrates....
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ژورنال
عنوان ژورنال: Agricultural and Biological Chemistry
سال: 1987
ISSN: 0002-1369,1881-1280
DOI: 10.1271/bbb1961.51.2671