ID 1.5.3.21 DE 4-methylaminobutanoate oxidase (methylamine-forming). CA 4-methylaminobutanoate + O(2) + H(2)O = succinate semialdehyde + CA methylamine + H(2)O(2). CC -!- The enzyme participates in the nicotine degradation pathway of the CC soil bacterium Arthrobacter nicotinovorans. CC -!- Has a very weak EC 1.4.3.4 activity with 4-aminobutanoate. DR Q8GAJ0, MABO2_PAENI; //