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Information on EC 1.1.1.430 - D-xylose reductase (NADH)

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EC Tree
IUBMB Comments
Xylose reductases catalyse the reduction of xylose to xylitol, the initial reaction in the fungal D-xylose degradation pathway. Most of the enzymes exhibit a strict requirement for NADPH (cf. EC 1.1.1.431, D-xylose reductase (NADPH)). Some D-xylose reductases have dual coenzyme specificity, though they still prefer NADPH to NADH (cf. EC 1.1.1.307, D-xylose reductase [NAD(P)H]). The enzyme from Candida parapsilosis is a rare example of a xylose reductase that significantly prefers NADH, with Km and Vmax values for NADH being 10-fold lower and 10-fold higher, respectively, than for NADPH.
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The enzyme appears in viruses and cellular organisms
Synonyms
xyl1.2, nadh-dependent xr, xyl1.1, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
xylitol + NAD(P)+ = D-xylose + NAD(P)H + H+
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xylitol + NAD+ = D-xylose + NADH + H+
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