Oxidation of indole-3-acetic Acid-amino Acid conjugates by horseradish peroxidase.

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.

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Cite this paper

@article{Park1987OxidationOI, title={Oxidation of indole-3-acetic Acid-amino Acid conjugates by horseradish peroxidase.}, author={Ro Dong Park and Choon Keun Park}, journal={Plant physiology}, year={1987}, volume={84 3}, pages={826-9} }