| abstract |
The invention relates to a DNA sequence comprising a structural gene encoding xylose reductase and/or xylitol dehydrogenase and being capable of expressing these polypeptides in a microorganism. The invention further relates to a combination of DNA sequences, a vector, a microorganism, a method for producing xylose reductase and/or xylitol dehydrogenase and the protein xylulose reductase and/or xylitol dehydrogenase. Microorganisms, expressing the structural genes comprised by the inventive DNA sequences may be used for producing ethanol from xylulose, for producing biomass and recovering NADP+ from NADPH. Preferred microorganisms are S. cerevisiae and Schizosaccharomyces pombe. |