Description
The enzyme can use either (R)-NADH-hydrate or (R)-NADPH-hydrate as a substrate. Its physiological role is to convert the (R) forms to the (S) forms, which could then be restored to active dinucleotides by EC 4.2.1.93, ATP-dependent NAD(P)H-hydrate dehydratase.
Reaction
(1) (6R)-6β-hydroxy-1,4,5,6-tetrahydronicotinamide-adenine dinucleotide = (6S)-6β-hydroxy-1,4,5,6-tetrahydronicotinamide-adenine dinucleotide; (2) (6R)-6β-hydroxy-1,4,5,6-tetrahydronicotinamide-adenine dinucleotide phosphate = (6S)-6β-hydroxy-1,4,5,6-tetrahydronicotinamide-adenine dinucleotide phosphate
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