Tags: Enzyme.
Spermine oxidase (EC 1.5.3.16 PAOh1/SMO AtPAO1 AtPAO4 SMO) is an enzyme with system name spermidine:oxygen oxidoreductase (spermidine-forming). This enzyme catalyses the following chemical reaction spermine + O2 + H2O spermidine + 3-aminopropanal + H2O2The enzyme from Arabidopsis thaliana oxidizes norspermine to norspermidine.