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Recent news related to substrates and inhibitors of plant amine oxidases

Authors
Journal
Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics
1570-9639
Publisher
Elsevier
Publication Date
Volume
1647
Identifiers
DOI: 10.1016/s1570-9639(03)00094-3
Keywords
  • Copper-Containing Amine Oxidase
  • Polyamine Oxidase
  • Polyamine
Disciplines
  • Biology
  • Design

Abstract

Abstract Reactions of pea diamine oxidase (PSAO) and maize polyamine oxidase (MPAO) with 1,4-bis(3-aminopropyl)-piperazine (BAPP), diethylenetriamine (DETA), dipropylenetriamine (DPTA), dehydrospermine (DHSP) and 3-oxapentane-1,5-diamine (OPD) were studied and compared. These reactions were characterised by kinetic measurements (kinetic constants, stoichiometry) and by measurements of absorption spectra (reaction mechanisms). In the case of oxidised polyamine compounds, the corresponding reaction products were determined using analytical methods (coloured trapping reactions, mass spectrometry, IR spectroscopy, thin layer chromatography). Some of the compounds were found to be substrates of PSAO and relatively potent inhibitors of MPAO (and vice versa) all at once. The others showed the same effect on both enzymes. This may have an importance for designing of experiments in physiological studies in plants.

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