Xanthoxin dehydrogenase

In enzymology, xanthoxin dehydrogenase is an enzyme that catalyzes the chemical reaction
The two substrates of this enzyme are xanthoxin and oxidised nicotinamide adenine dinucleotide. Its products are abscisic aldehyde, reduced 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 xanthoxin:NAD⁺ oxidoreductase. Other names in common use include xanthoxin oxidase, and ABA2. This enzyme participates in carotenoid biosynthesis.