Noncompetitive Inhibition by L-Cysteine and Activation by L-Glutamate of the Iron-Oxidizing Activity of a Mixotrophic Iron-Oxidizing Bacterium Strain OKM-9
Abstract:A mesophilic, mixotrophic iron-oxidizing bacterium strain OKM-9 uses ferrous iron as a sole source of energy and L-glutamate as a sole source of cellular carbon. Uptake of L-glutamate into OKM-9 cells is absolutely dependent on ferrous iron oxidation. Thus, the Fe(2+)-dependent L-glutamate uptake system of strain OKM-9 is crucial for the bacterium to grow mixotrophically in iron medium with L-glutamate. The relationship between iron oxidation and L-glutamate transport activities was studied. Iron oxidase conta… Show more
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