The anthocyanidin reductase activity of a plant or plant part.
Source:
SOY:001
Comment
Catalyzes the reaction: a flavan-3-ol + 2 NAD(P)+ = an anthocyanidin + 2 NAD(P)H + H+. It catalyzes the double reduction of anthocyanidins, producing (2R,3R)-flavan-3-ol monomers required for the formation of proanthocyanidins.