Reaction: (R)-reticuline + NADP+ = 1,2-dehydroreticulinium + NADPH + H+
For diagram click here.
Other name(s): 1,2-dehydroreticulinium ion reductase
Systematic name: (R)-reticuline:NADP+ oxidoreductase
Comments: Reduces the 1,2-dehydroreticulinium ion to (R)-reticuline, which is a direct precursor of morphinan alkaloids in the poppy plant. The enzyme does not catalyse the reverse reaction to any significant extent under physiological conditions.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 130590-58-8
1. De-Eknamkul, W. and Zenk, M.H. Purification and properties of 1,2-dehydroreticulinium reductase from Papaver somniferum seedlings. Phytochemistry 31 (1992) 813-821.