ID 1.5.3.17 DE Non-specific polyamine oxidase. AN Polyamine oxidase. CA (1) Spermine + O(2) + H(2)O = spermidine + 3-aminopropanal + H(2)O(2). CA (2) Spermidine + O(2) + H(2)O = putrescine + 3-aminopropanal + H(2)O(2). CA (3) N(1)-acetylspermine + O(2) + H(2)O = spermidine + 3-acetamidopropanal CA + H(2)O(2). CA (4) N(1)-acetylspermidine + O(2) + H(2)O = putrescine + CA 3-acetamidopropanal + H(2)O(2). CF FAD. 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, EC 1.5.3.n1, EC 1.5.3.n2 and EC 1.5.3.n4. DR P50264, FMS1_YEAST ; Q9LYT1, PAO3_ARATH ; //