ID 3.1.1.105 DE 3-O-acetylpapaveroxine carboxylesterase. CA 3-O-acetylpapaveroxine + H2O = acetate + H(+) + narcotine hemiacetal. CC -!- The enzyme, characterized from the plant Papaver somniferum (opium CC poppy), participates in the biosynthesis of the isoquinoline alkaloid CC noscapine. DR I3PLR2, CXE1_PAPSO ; A0A0A1EQ07, CXE2_PAPSO ; //