Phytochemistry

Oxidation of acetylpolyamines by maize polyamine oxidase

R Federico, L Ercolini, M Laurenzi, R Angelini

Index: Federico, Rodolfo; Ercolini, Luca; Laurenzi, Maria; Angelini, Riccardo Phytochemistry, 1996 , vol. 43, # 2 p. 339 - 341

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Citation Number: 21

Abstract

The oxidation of acetylpolyamines by cell wall polyamine oxidase from maize shoots was investigated. The purified enzyme catalysed the oxidation of N1-acetylspermine, N1- acetylspermidine, and N8-acetylspermidine at the same optimal pH (6.5), but with lower relative velocities and higher Km than those found for spermine and spermidine oxidation. The enzyme cleaved N1-acetylspermine and N8-acetylspermidine, at the same positions ...