Indolylacetic acid oxidase

NT390 Chirek, Z. Physiological and biochemical effects of morphactin IT3233 NT401 on callus and tumor tissues of Nicoti-ana tabacum cultured in vitro. IV. Beta-indolylacetic acid oxidase activity. 

There a number of cases other than those of dihydroxyfumaric acid oxidase and tryptophan oxidase in which peroxidases appear to play the part of oxidases. These include indolylacetic acid oxidase and the related indolylpropionic and indolylbutyric acid oxidases (285, 415,416,618,733,777), the oxidase of oxalic, oxalacetic, ketomalonic, and dihydroxytartaric acids (414), of phenylacetaldehyde (413) and saturated fatty acid oxidase (711). 

Dihydroxyfu-maric acid oxidase Indolylacetic acid oxidase... 

In plants 3-indolylacetic acid is inactivated by 3-indolylacetic oxidase. A comparative study of the resistance of 3-indolylacetic acid and heteroauxin silatranylmethyl ester to crystalline peroxidase of horseradish (20 mkg/ml) has shown that the first compound decomposes within 10 minutes whereas the second compound does not decompose during the experiment (90 min) (Fig. 18). 

Hall SM, Medlow GC (1974) Identification of lAA in phloem and root pressure saps of Ricinus communis L. by mass spectrometry. Planta 119 257-261 Halliday MBW, Wangermann E (1972 a) Leaf abscission in Coleus. I. Abscission zone formation and the effect of auxin on abscission. New Phytol 71 649-663 Halliday MBW, Wangermann E (1972b) Leaf abscission in Coleus. II. The distribution and fate of [ " C]-indolylacetic acid in the petiole. New Phytol 71 665-670 Hare RC (1964) Indoleacetic acid oxidase. Bot Rev 30 129-165... 

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