The regulation of transport of glucose and methyl alpha-glucoside in Pseudomonas aeruginosa
- PMID: 4199012
- PMCID: PMC1177574
- DOI: 10.1042/bj1320141
The regulation of transport of glucose and methyl alpha-glucoside in Pseudomonas aeruginosa
Abstract
The methyl alpha-glucoside-transport system of Pseudomonas aeruginosa has been characterized with respect to its specificity, energy-dependence, kinetics and regulation. The uptake of glucose involved two components, one of which transported glucose (K(m)=8mum) and methyl alpha-glucoside (K(m)=2.8mm) whereas the other was more complex, involving the extracellular activity of glucose dehydrogenase. Mutants defective in this enzyme have been isolated and characterized. The methyl alpha-glucoside-glucose-transport system was repressed when the organism was grown in the absence of glucose; the induction of this transport system by glucose, and its activity once induced, were inhibited by products of citrate metabolism.
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