Summary
Gluconobacter oxydans subsp. suboxydans ATCC 621 oxidizes d-xylose to xylonic acid very efficiently, although it cannot grow on xylose as sole carbon source. The oxidation of xylose was found to be catalyzed by a membrane-bound xylose dehydrogenase. The xylono-γ-lactone formed in the oxidation reaction is subsequently hydrolyzed to xylonic acid by a γ-lactonase. The complete oxidation pathway of d-xylose in G. oxydans is evidently located in the periplasmic space.
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Buchert, J., Viikari, L. Oxidative d-xylose metabolism of Gluconobacter oxydans . Appl Microbiol Biotechnol 29, 375–379 (1988). https://doi.org/10.1007/BF00265822
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DOI: https://doi.org/10.1007/BF00265822