| Literature DB >> 11538238 |
Abstract
Indole-3-acetic acid is oxidized to oxindole-3-acetic acid by Zea mays tissue extracts. Shoot, root, and endosperm tissues have enzyme activities of 1 to 10 picomoles per hour per milligram protein. The enzyme is heat labile, is soluble, and requires oxygen for activity. Cofactors of mixed function oxygenase, peroxidase, and intermolecular dioxygenase are not stimulatory to enzymic activity. A heat-stable, detergent-extractable component from corn enhances enzyme activity 6- to 10-fold. This is the first demonstration of the in vitro enzymic oxidation of indole-3-acetic acid to oxindole-3-acetic acid in higher plants.Entities:
Keywords: NASA Discipline Number 40-10; NASA Discipline Plant Biology; NASA Program Space Biology; Non-NASA Center
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Year: 1988 PMID： 11538238 PMCID： PMC1054585 DOI： 10.1104/pp.86.3.868
Source DB: PubMed Journal: Plant Physiol ISSN： 0032-0889 Impact factor: 8.340