Rat Sorbitol Dehydrogenase, SDH ELI

Polyol dehydrogenase that catalyzes the reversible NAD(+)-dependent oxidation of various sugar alcohols (By similarity).

Is active with D-sorbitol (D-glucitol) leading to the C2-oxidized product D-fructose (PubMed: 6862079).

Is a key enzyme in the polyol pathway that interconverts glucose and fructose via sorbitol, which constitutes an important alternate route for glucose metabolism.

May play a role in sperm motility by using sorbitol as an alternative energy source for sperm motility (By similarity).