[The activity of xylose reductase and xylitol dehydrogenase in yeasts].
The activity and the cofactor specificity of xylose reductase and xylitol dehydrogenase were studied in extracts of yeasts from the genera Candida, Kluyveromyces, Pachysolen, Pichia, and Torulopsis grown under microaerobic conditions. It was found that xylitol dehydrogenase in all of the yeast species studied is specific for NAD+; xylose reductase in the xylitol-producing species C. didensiae, C. intermediae, C. parapsilosis, C. silvanorum, C. tropicalis, Kl. fragilis, Kl. marxianus, P. guillermondii, and T. molishiama is specific for NADPH; and xylose reductase in the ethanol-producing species P. stipitis, C. shehatae, and Pa. tannophilus is specific for both NADPH and NADH.
Iablochkova
E N
EN
St. Petersburg State Technological Institute (Technical University), Moskovskii pr. 26, St. Petersburg, 198013 Russia.
Bolotnikova
O I
OI
Mikhaĭlova
N P
NP
Nemova
N N
NN
Ginak
A I
AI
D000332:Aerobiosis; D000449:Aldehyde Reductase / Q000378:metabolism*; D050542:D-Xylulose Reductase; D009243:NAD / Q000378:metabolism; D009249:NADP / Q000378:metabolism; D013401:Sugar Alcohol Dehydrogenases / Q000378:metabolism*; D014994:Xylose / Q000378:metabolism; D015003:Yeasts / Q000201:enzymology* / Q000254:growth & development
D009243:NAD; D009249:NADP; D014994:Xylose; D013401:Sugar Alcohol Dehydrogenases; D000449:Aldehyde Reductase; D050542:D-Xylulose Reductase