Regulation of the β-Glucoside System in Escherchia coli K-12
نویسندگان
چکیده
منابع مشابه
Regulation of glyoxylate metabolism in Escherichia coli K-12.
The relative contributions of the dicarboxylic acid and the tricarboxylic acid cycles to the oxidative catabolism of glyoxylate in Escherichia coli K-12 were deduced by analysis of mutant strains that were blocked in the formation of glyoxylate carboligase and of malate synthase G (the "glycolate form" of malate synthase). Mutant strains unable to form malate synthase G were unimpaired in their...
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Studies involving lambda phage transduction of the D-arabinose utilization gene (dar+) in Escherichia coli K-12 indicated the product of this gene to be a transdominant activator. An apparent anomaly regarding this hypothesis exists in that a diploid recessive lysogen (lambda dar-/dar-) can spontaneously become capable of growth on D-arabinose.
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N 1961 JACOB and MONOD reviewed the general state of our knowledge con’ cerning genetic regulatory mechanisms involved in protein synthesis. They cited evidence that the induction of the lactose utilizing enzymes in Escherichia coli was mediated through the inactivation of an internal repressor by the externally given inducer. Such a model of “negative control” implies that there is no other re...
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Bacteria have evolved various mechanisms to extract utilizable substrates from available resources and consequently acquire fitness advantage over competitors. One of the strategies is the exploitation of cryptic cellular functions encoded by genetic systems that are silent under laboratory conditions, such as the bgl (β-glucoside) operon of E. coli. The bgl operon of Escherichia coli, involved...
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The d-serine transport system in Escherichia coli K-12 was studied by use of a mutant unable to form d-serine deaminase, yet resistant to d-serine. The mutant is greatly impaired in its ability to accumulate d-serine, d-alanine, and glycine. Transport of l-alanine is partially affected but transport of l-serine is unaffected. The mutant is also resistant to d-cycloserine, indicating that d-seri...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1974
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.120.2.638-650.1974