L-Tyrosine Oxidase System in Tuber of Nutsedge

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Science  28 Jul 1961:
Vol. 134, Issue 3474, pp. 281-282
DOI: 10.1126/science.134.3474.281


In the nutsedge, Cyperus rotundus L., the oxidation of L-tyrosine follows steps similar to those reported for mammalian liver and Blattella conjuncta. The system is activated by α-keto-glutarate, L-ascorbic acid, glutathione, and pyridoxal phosphate. Folic acid markedly inhibits the reaction.