ID 1.1.1.415 DE noscapine synthase. CA narcotine hemiacetal + NAD(+) = noscapine + NADH + H(+). CC -!- The enzyme, characterized from the plant Papaver somniferum (opium CC poppy), catalyzes the last step in the biosynthesis of the CC isoquinoline alkaloid noscapine. DR I3PLR3, SDR1_PAPSO ; //