On the Nature of the Enzymatically Catalyzed Oxidation Products of Indoleacetic Acid.

Abstract

In the presence of pea seedling, indole-acetic acid oxidase, indoleacetic acid undergoes oxidative conversion into at least two products. Application of paper chromatography and color reagents indicates that 3-indole-aldehyde, o-formamidoacetophenone, o-aminoacetophenone, and 4-hydroxyquinoline are not among the major end products of oxidation. Neither o-formamidoacetophenone nor 3-indole-aldehyde functions are intermediates in the formation of the end products. A possible interpretation of these findings is advanced.