This enzyme belongs to the family of oxidoreductases, specifically those acting on CH or CH2 groups with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is (2R,3S)-catechin:NADP+ 4-oxidoreductase. This enzyme is also called leucocyanidin reductase. This enzyme participates in flavonoid biosynthesis.
Tanner GJ, Kristiansen KN (1993). "Synthesis of 3,4-cis-[3H]leucocyanidin and enzymatic reduction to catechin". Anal. Biochem.209 (2): 274–7. doi:10.1006/abio.1993.1119. PMID8470799.
Tanner GJ, Francki KT, Abrahams S, Watson JM, Larkin PJ, Ashton AR (2003). "Proanthocyanidin biosynthesis in plants. Purification of legume leucoanthocyanidin reductase and molecular cloning of its cDNA". J. Biol. Chem.278 (34): 31647–56. doi:10.1074/jbc.M302783200. PMID12788945.