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Regulation of hexuronate system genes in Escherichia coli K-12: multiple regulation of the uxu operon by exuR and uxuR gene products.
New regulatory mutants of Escherichia coli K-1 carrying alterations of the uxuR gene were isolated and characterized. In the presence of superrepressed or derepressed uxuR mutations, mannonic… Expand
Genetic control of the 2-keto-3-deoxy-d-gluconate metabolism in Escherichia coli K-12: kdg regulon.
2-Keto-3-deoxy-gluconate (KDG), an intermediate of the hexuronate pathway in Escherichia coli K-12, is utilized as the sole carbon source only in strains derepressed for the specific KDG-uptake… Expand
Physiological and genetic regulation of the aldohexuronate transport system in Escherichia coli.
In Escherichia coli K-12, the specificity of the aldohexuronate transport system (THU) is restricted to glucuronate and galacturonate. There is a relatively high basal-level activity in uninduced… Expand
Regulation of Escherichia coli K-12 hexuronate system genes: exu regulon.
Two types of Escherichia coli K-12 regulatory mutants, partially or totally negative for the induction of the five catabolic enzymes (uronic isomerase, uxaC; altronate oxidized nicotinamide adenine… Expand
La D‐altronate: NAD‐oxydoréductase d'Escherichia coli K12 Purification, proprié0tés et individualité
D-Altronate: NAD-oxidoreductase of Escherichia coli K12 has been purified. The purification consists of four steps: nucleic acids precipitation with protamine sulfate; ammonium sulfate precipitation;… Expand
Inducibility of β-Glucuronidase in Wild-Type and Hexuronate-Negative Mutants of Escherichia coli K-12
In strain K-12 of Escherichia coli, β-glucuronidase synthesis was induced only by β-glucuronides: all intermediates of the hexuronate pathway able to enter the cells failed to induce the enzyme… Expand
A transport system for 2-keto-3-deoxy-D-gluconate uptake in Escherichia coli K12. Biochemical and physiological studies in whole cells.
We have presented kinetic evidence for the occurrence in Escherichia coli K 12 of an active transport system responsible for 2-keto-3-deoxy-d-gluconate uptake. It has been studied in constitutive… Expand
Construction and expression of hybrid plasmids containing Escherichia coli K-12 uxu genes.
- P. Ritzenthaler, M. Mata-Gilsinger, F. Stoeber
- Biology, Medicine
- Journal of bacteriology
- 1 September 1980
The three genes of the Escherichia coli K-12 uxu region (uxu operon and regulatory gene) were isolated on a ColE1-uxu hybrid plasmid from the bank of Clarke and Carbon, and a restriction map of this… Expand
Transport of 2-keto-3-deoxy-D-gluconate in isolated membrane vesicles of Escherichia coli K12.
1 Escherichia coli membrane vesicles isolated from strains derepressed for 2-keto-3-deoxy-d-gluconate transport system were found to be able to take up 2-keto-3-deoxy-d-gluconate and d-glucuronate… Expand
Étude du rameau dégradatif commun des hexuronates chez Escherichia coli K 12
The investigation of hexuronate (d-glucuronate and d-galacturonate) metabolism in Escherichia coli K 12 has been completed by studying the biochemical properties of the… Expand