Proposed Model for the Peroxidase-Catalyzed Oxidation of Indole-3-acetic Acid in the Presence of the Inhibitor Ferulic Acid 1
AUTOR(ES)
Gelinas, D. A.
RESUMO
Linear increments in ferulic acid concentration produce logarithmic increases in the ferulic acid-induced lag periods prior to the peroxidase-catalyzed oxidation of indole-3-acetic acid in a system containing 2,4-dichlorophenol and MnCl2 in acetate buffer at pH 5.6. Maintaining the ratio of indole-3-acetic acid to ferulic acid constant at 100 while linearly raising the ferulic acid concentration results in linear increases in the lag period. Both indole-3-acetic acid and ferulic acid are substrates of horseradish peroxidase in the presence of H2O2, and indole-3-acetic acid competitively inhibits the oxidation of ferulic acid. A model for the enzymatic oxidation of indole-3-acetic acid catalyzed by peroxidase is proposed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366383Documentos Relacionados
- Indole-3-Acetic Acid Oxidation and Crocin Bleaching by Horseradish Peroxidase 1
- Transfer RNA-Peroxidase Interaction: INHIBITION OF INDOLE-3-ACETIC ACID OXIDATION
- Oxidation of Indole-3-Acetic Acid-Amino Acid Conjugates by Horseradish Peroxidase
- Hydrogen Peroxide-mediated Oxidation of Indole-3-acetic Acid by Tomato Peroxidase and Molecular Oxygen 1
- The Effect of Indole-3-Acetic Acid in the Diastase Charcoal Model System 1
