“…(Copper-containing amine oxidases [amine:oxygen oxidoreducíase (deaminating) (copper-containing), EC 1.4.3.6] catalyze the oxidative deamination of amines by accepting two electrons from amines and transferring them to molecular oxygen, as expressed by the equation (Malmstróm et al, 1975) RCH2NH2 + Oz + H20 -RCHO + NH3 + H202 They are known to contain nonblue and electron paramagnetic resonance (EPR)1 detectable copper (Yamada et al, , 1969Mondovi et al, 1967;Lindstróm et al, 1974;Suzuki et al, 1980Suzuki et al, , 1983) and an organic chromophore responsible for their yellowish pink color Lindstróm & Pettersson, 1973;Ishizaki & Yasunobu, 1976;Finazzi-Agro et al, 1977 et al, 1981, 1982, 1983). Reactions of the copper with complexing agents (Yamada & Yasunobu, 1962;Lindstróm & Pettersson, 1974;Lindstróm et al, 1974) or of the chromophore with carbonyl reagents Falk, 1983) lead to an inactivation of the enzyme.…”