In enzymology, a D-arabinitol 4-dehydrogenase () is an enzyme that catalyzes the chemical reaction
Its two substrates are D-arabinitol and oxidised nicotinamide adenine dinucleotide (NAD+). The products are D-xylulose, reduced cofactor NADH, and a proton.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is D-arabinitol:NAD+ 4-oxidoreductase. Other names in common use include D-arabitol dehydrogenase and arabitol dehydrogenase. This enzyme participates in pentose and glucuronate interconversions and fructose and mannose metabolism.Characterization of Arabitol Dehyrogenase in Transplastomic Plants. LAP Lambert Academic Publishing.
See also L-arabinitol 4-dehydrogenase
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