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Influence of glucose on xylose metabolization by Spathaspora passalidarum
Fungal Genetics and Biology, 2021The yeast Spathaspora passalidarum is able to produce ethanol from D-xylose and D-glucose. However, it is not clear how xylose metabolism is affected by D-glucose when both sugars are available in the culture medium. The aims of this work were to evaluate the influence of D-glucose on D-xylose consumption, ethanol production, gene expression, and the ...
Wendel Batista da Silveira +10 more
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Metabolism of D-Xylose by Moulds
Nature, 1960THE filamentous fungi have been called ubiquitous and omnivorous, and certainly they are widely distributed in Nature where they play a most important part in the decomposition of complex organic matter and as pathogens for many plants. Since much of the plant-derived organic matter in Nature contains a large amount of pentoses, mostly in the form of ...
S. G. Knight, Ching Chiang
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Xylose metabolism by Pichia stipitis: the effect of ethanol [PDF]
Applied Microbiology and Biotechnology, 1991 Pichia stipitis Y7124 was grown anaerobically on d-xylose in the presence of an initial ethanol concentration (E0) varying from 0 to 40 g/l. When E0 increased, the yield of xylitol increased linearly, reaching a value of 0.20 mol xylitol/mol xylose at E0=40 g/l.
Delgenès, Jean-Philippe +2 more
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Oxidative d-xylose metabolism of Gluconobacter oxydans
Applied Microbiology and Biotechnology, 1988Gluconobacter 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 ...
Viikari, Liisa, Buchert, Johanna
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Metabolic Control Analysis of Xylose Catabolism in Aspergillus
Biotechnology Progress, 2008A kinetic model for xylose catabolism in Aspergillus is proposed. From a thermodynamic analysis it was found that the intermediate xylitol will accumulate during xylose catabolism. Use of the kinetic model allowed metabolic control analysis (MCA) of the xylose catabolic pathway to be carried out, and flux control was shown to be dependent on the ...
Prathumpai, W. +6 more
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D-Xylose metabolism in Rhodosporidium toruloides
Biotechnology Letters, 1997Hofer et al. (Biochem. Biophys. Acta 1971. 252:1-12) presented circumstantial evidence that suggested that Rhodosporidium toruloides produced a xylose isomerase. We were unable to detect this activity in cell-free extracts of this yeast, however, xylose reductase and xylitol dehydrogenase activities were detected.
Christopher D. Skory +2 more
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Engineering yeasts for xylose metabolism
Current Opinion in Biotechnology, 2006Technologies for the production of alternative fuels are receiving increased attention owing to concerns over the rising cost of petrol and global warming. One such technology under development is the use of yeasts for the commercial fermentation of xylose to ethanol. Several approaches have been employed to engineer xylose metabolism.
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Xylose metabolism in genetic variants of Salmonella typhosa
Archives of Biochemistry and Biophysics, 1957Abstract Evidence has been presented which establishes steps in the route of xylose utilization in certain strains of S. typhosa . The failure of the negative strain to metabolize d -xylose stems from its inability to form the enzyme, xylose isomerase, and the enzyme, xylulokinase. The positive strain of S.
L.S. Baron, E.S. Kline
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