ID 1.5.3.17 DE non-specific polyamine oxidase. AN polyamine oxidase. CA (1) spermine + O2 + H2O = 3-aminopropanal + spermidine + H2O2. CA (2) spermidine + O2 + H2O = 3-aminopropanal + putrescine + H2O2. CA (3) N(1)-acetylspermine + O2 + H2O = 3-acetamidopropanal + spermidine + CA H2O2. CA (4) N(1)-acetylspermidine + O2 + H2O = 3-acetamidopropanal + putrescine + CA H2O2. CC -!- The non-specific polyamine oxidases may differ from each other CC considerably. CC -!- The enzyme from Saccharomyces cerevisiae shows a rather broad CC specificity and also oxidizes N(8)-acetylspermidine. CC -!- The enzyme from Ascaris suum shows high activity with spermine and CC spermidine, but also oxidizes norspermine. CC -!- The enzyme from Arabidopsis thaliana shows high activity with CC spermidine, but also oxidizes other polyamines. CC -!- The specific polyamine oxidases are classified as EC 1.5.3.13, CC EC 1.5.3.14, EC 1.5.3.15 and EC 1.5.3.16. CC -!- Formerly EC 1.5.3.11. DR P50264, FMS1_YEAST ; Q9FNA2, PAO1_ARATH ; Q9LYT1, PAO3_ARATH ; //