In attempts to generate S. cerevisiae strains that are able to ferment D-xylose the XYL1 and XYL2 genes of P. stipitis coding for the D-xylose reductase (XR) and xylitol dehydrogenase (XDH), respectively were introduced in S. cerevisiae by means of genetic engineering.
5-alpha reductase | HMG-CoA reductase | Rubredoxin—NAD(P)+ reductase | Ribonucleoside-triphosphate reductase | GMP reductase | Flavanone 4-reductase | D-xylose reductase |