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. 1973 Mar;131(3):459-69.
doi: 10.1042/bj1310459.

Kinetics of the diamine oxidase reaction

W G Bardsley, M J Crabbe, J S Shindler

Kinetics of the diamine oxidase reaction

W G Bardsley et al. Biochem J. 1973 Mar.

Abstract

1. The oxidation of p-dimethylaminomethylbenzylamine was followed spectrophotometrically by measuring the change in E(250) caused by the p-dimethylaminomethylbenzaldehyde produced under a wide variety of experimental conditions. 2. The effect of variations in concentrations of both substrates (amine and oxygen) and all products (aminoaldehyde, hydrogen peroxide and ammonia) on this reaction was studied and the results used to develop a formal mechanism. 3. The nature of the rate-limiting step was elucidated by studying the effects of alterations in ionic strength, dielectric constant and deuterium substitution on the velocity of the forward reaction. 4. Thermodynamic activation energy parameters were obtained at several pH values from the effects of temperature on the reaction.

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References

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