ID 1.4.9.1 DE methylamine dehydrogenase (amicyanin). AN amine dehydrogenase. AN MADH. AN methylamine dehydrogenase. AN primary-amine dehydrogenase. CA H2O + methylamine + 2 oxidized [amicyanin] = formaldehyde + 2 H(+) + CA NH4(+) + 2 reduced [amicyanin]. CC -!- The enzyme oxidizes aliphatic monoamines and diamines, histamine and CC ethanolamine, but not secondary and tertiary amines, quaternary CC ammonium salts or aromatic amines. CC -!- Formerly EC 1.4.98.1 and EC 1.4.99.3. DR Q49124, DHMH_METEA ; Q50420, DHMH_METFK ; Q59542, DHMH_METME ; DR P29894, DHMH_PARDE ; P23006, DHMH_PARVE ; P00372, DHML_METEA ; DR Q50425, DHML_METFK ; Q59543, DHML_METME ; P22619, DHML_PARDE ; DR P22641, DHML_PARVE ; //