ID 1.1.1.348 DE (3R)-2'-hydroxyisoflavanone reductase. AN vestitone reductase. CA a (3R,4R)-4,2'-dihydroxyisoflavan + NADP(+) = a (3R)- CA 2'-hydroxyisoflavanone + H(+) + NADPH. CC -!- This plant enzyme participates in the biosynthesis of the pterocarpan CC phytoalexins medicarpin, maackiain, and several forms of glyceollin. CC -!- The enzyme has a strict stereo specificity for the 3R-isoflavanones. CC -!- Formerly EC 1.1.1.246. DR Q40316, VESTR_MEDSA; //