Oxidative d-xylose metabolism of Gluconobacter oxydans |
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Authors: | Johanna Buchert Liisa Viikari |
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Affiliation: | (1) Biotechnical Laboratory, VTT, Tietotie 2, SF-02150 Espoo, Finland |
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Abstract: | 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--lactone formed in the oxidation reaction is subsequently hydrolyzed to xylonic acid by a -lactonase. The complete oxidation pathway of d-xylose in G. oxydans is evidently located in the periplasmic space. |
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