Role of D-ribose as a cometabolite in D-xylose metabolism by Saccharomyces cerevisiae
Article Abstract:
The effect of ribose as a cosubstrate on the uptake and metabolism of xylose by Saccharomyces cerevisiae ATCC 26602 was investigated. It was shown that ribose competes with xylose for low-affinity transport but not with high-affinity transport. 13C nuclear magnetic resonance spectroscopy indicated that both sugars are reduced to their corresponding polyols. However, the NADPH2 required for conversion of xylose to xylitol is not supplied by the pentose phosphate pathway. Acetic acid was produced from ribose and may assist in xylose metabolism by cycling NADPH2.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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Glucose and carbon dioxide metabolism by Succinivibrio dextrinosolvens
Article Abstract:
Changes in the molar yields of catabolic end products and cells of glucose growing-Succinvibrio dextrinosolvens by growth rates and culture conditions were discussed. A feasible fermentation balance was obtained by estimating carbon dioxide metabolism. Characterization of the glucose fermentation pathway and sites of carbon dioxide fixation were determined by C nuclear magnetic resonance experiments. The metabolic pathway of glucose and carbon dioxide was identified.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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