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Regulation Of Maize Catalase By Changing Rates Of Synthesis And Degradation

J C Sorenson, P S Ganapathy, J G Scandalios

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Rates of catalase synthesis and degradation were measured in the scutellum of the germinating maize seedling by the technique of Price, Sterling, Tarantola, Hartley & Rechcigl [J. Biol. Chem. (1963) 237, 3468-3475] by using the porphyrinogenic drug 2-allyl-2-isopropylacetamide to inhibit catalase synthesis. Results indicate that developmental changes in catalase activity are determined by changes in the rate of enzyme degradation as well as by changes in the rates of its synthesis.