Abstract

Desulfobacter postgatei grows on acetate and sulfate as energy source. The oxidation of acetate to 2 CO2 proceeds via the citric acid cycle involving membrane-bound succinate dehydrogenase and membrane-bound malate dehydrogenase. We report here that the organism contains membrane-bound NADPH dehydrogenase and ferredoxin: NADP oxidoreductase for the reoxidation of NADPH and reduced ferredoxin generated during isocitrate- and 2-oxoglutarate oxidation, respectively. The presence of proton translocating ATPase activity is also described.

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