Molecular physiology of the dynamic regulation of carbon catabolite repression in Escherichia coli
نویسندگان
چکیده
منابع مشابه
Catabolite repression gene of Escherichia coli.
A catabolite repression gene (cat) which alters the sensitivity of Escherichia coli to catabolite repression has been mapped by transduction and shown to be located between the pyrC and purB genes. When the cat-1 mutation was studied in a number of genetic backgrounds, the results showed that this mutation affects the synthesis of more than one catabolic enzyme but does not completely eliminate...
متن کاملMechanism of catabolite repression of tryptophanase synthesis in Escherichia coli.
Repression of tryptophanase (tryptophan indole-lyase) by glucose and its non-metabolizable analogue methyl alpha-glucoside has been studied employing a series of isogenic strains of Escherichia coli lacking cyclic AMP phosphodiesterase and altered for two of the proteins of the phosphoenolpyruvate:sugar phosphotransferase system (PTS), Enzyme I and Enzyme IIAGlc. Basal activity of tryptophanase...
متن کاملEffect of amino sugars on catabolite repression in Escherichia coli.
N-acetylglucosamine was found to be a good repressor source for catabolite repression of the beta-galactosidase system in Escherichia coli. It was found capable of increasing the severity of repression by glucose or gluconate when included in the medium with either of these substrates. N-acetylglucosamine was shown to be assimilated under these conditions, but had no effect on culture growth ra...
متن کاملRegulation of the araC gene of Escherichia coli: catabolite repression, autoregulation, and effect on araBAD expression.
The araC gene encodes a positive regulatory protein required for L-arabinose utilization in Escherichia coli. Transcription from the araC promoter has been shown to be under positive control by cAMP receptor protein and under negative control by its protein product (autoregulation). This work describes the identification of the region of the araC promoter that interacts with the cAMP receptor p...
متن کاملGlycerol-3-phosphate-induced catabolite repression in Escherichia coli.
The formation of glycerol-3-phosphate (G3P) in cells growing on TB causes catabolite repression, as shown by the reduction in malT expression. For this repression to occur, the general proteins of the phosphoenolpyruvate-dependent phosphotransferase system (PTS), in particular EIIA(Glc), as well as the adenylate cyclase and the cyclic AMP-catabolite activator protein system, have to be present....
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ژورنال
عنوان ژورنال: Microbiology
سال: 2014
ISSN: 1350-0872,1465-2080
DOI: 10.1099/mic.0.077289-0