Glucose metabolism of thraustochytrium roseum,a nonfilamentous marine phycomycete |
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Authors: | Melvin M Belsky Solomon Goldstein |
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Institution: | (1) Department of Biology, Brooklyn College, Brooklyn, New York |
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Abstract: | Summary In uniformly labeled logarithmic-phase cells of Thraustochytrium roseum grown in isotopic glucose, 85% of the respiratory CO2 was derived from endogenous reserves and only 15% was contributed by exogenous glucose. Experiments with asymetrically labeled glucose showed that the main portion of metabolic CO2 came from carbon 1 of the glucose molecule, suggesting that the hexose monophosphate shunt is a major pathway for glucose dissimilation in the fungus. The presence of several enzymes of the hexose monophosphate shunt, the Embden-Meyerhof and glyoxylate pathways, and the tricarboxylic acid cycle were demonstrated. |
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