ID 1.14.19.54 DE 1,2-dehydroreticuline synthase. AN CYP82Y2. CA (S)-reticuline + O2 + reduced [NADPH--hemoprotein reductase] = 1,2- CA dehydroreticuline + H(+) + 2 H2O + oxidized [NADPH--hemoprotein CA reductase]. CC -!- The enzyme from Papaver rhoeas (field poppy) is specific for (S)- CC reticuline and does not act on the (R)-form. CC -!- The enzyme from Papaver somniferum (opium poppy), which is involved CC in the biosynthesis of morphine and related alkaloids, forms a fusion CC protein with EC 1.5.1.27, which catalyzes the reduction of 1,2- CC dehydroreticuline to (R)-reticuline, thus forming an epimerase system CC that converts (S)-reticuline to (R)-reticuline. DR P0DKI7, STORR_PAPSO; //