Galactitol 2-dehydrogenase
In enzymology, a galactitol 2-dehydrogenase () is an enzyme that catalyzes the chemical reaction Thus, the two substrates of this enzyme are galactitol and NAD, whereas its 3 products are D-tagatose, NADH, and H. 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 galactitol:NAD 2-oxidoreductase. This enzyme is also called dulcitol dehydrogenase. This enzyme participates in galactose metabolism.