Oxidation of Indole-3-Acetic Acid-Amino Acid Conjugates by Horseradish Peroxidase
- 1 July 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 84 (3), 826-829
- https://doi.org/10.1104/pp.84.3.826
Abstract
The stability of 21 amino acid conjugates of indole-3-acetic acid (IAA) toward horseradish peroxidase (HRP) was studied. The IAA conjugates of Arg, Ile, Leu, Tyr, and Val were oxidized readily by peroxidase. Those of Ala, .beta.-Ala, Asp, Cys, Gln, Glu, Gly, and Lys were not degraded and their recovery was above 92% after 1 hour incubation with HRP. A correlation between the stability of IAA conjugates toward peroxidase-catalyzed oxidation and the hydrophobicity of the amino acid moiety conjugated to IAA was demonstrated. Polar amino acid conjugates of IAA are more resistant to HRP-catalyzed oxidation.This publication has 26 references indexed in Scilit:
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