BIOGENESIS OF RIBOFLAVIN IN GREEN LEAVES:III. ON ENZYMATIC CONVERSION OF 6, 7-DIMETHYL-8-RIBITYLLUMAZINE TO RIBOFLAVIN AND 6-METHYL-8-RIBITYL-2, 4, 7-TRIOXO-HEXAHYDROPTERIDINE
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概要
- 論文の詳細を見る
The stoichiometry of the enzymatic formation of riboflavin and 6-methyl-8-ribityl-2, 4, 7-trioxo-hexahydropteridine from 6, 7-dimethyl-8-ribityllumazine was examined with a crude enzyme preparation obtained from the spinach.1. One mole of 6-methyl-8-ribityl-2, 4, 7-trioxo-hexahydropteridine was produced from two moles of 6, 7-dimethyl-8-ribityllumazine.2. The molar ratio of the riboflavin enzymatically produced to 6-methyl-8-ribityl-2, 4, 7-trioxo-hexahydropteridine produced varied in the presence of cysteine.3. Formation of 6-methyl-8-ribityl-2, 4, 7-trioxo-hexahydropteridine from 6, 7-dimethyl-8-ribityllumazine was inhibited by ascorbic acid.4. Pyruvate was incorporated enzymatically neither into riboflavin nor into 6-methyl-8-ribityl-2, 4, 7-trioxo-hexahydropteridine.
- 日本ビタミン学会の論文
著者
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SUZUKI Yuzuru
Laboratory of Aquatic Animal Physiology, Department of Aquatic Bioscience, Graduate School of Agricu
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MITSUDA HISATERU
Laboratory of Nutritional Chemistry, Faculty of Agriculture, Kyoto University
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KAWAI FUMIO
Laboratory of Nutritional Chemistry, Faculty of Agriculture, Kyoto University
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SUZUKI YUZURU
Laboratory of Nutritional Chemistry, Faculty of Agriculture, Kyoto University
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NAKAYAMA YUKUHO
Laboratory of Nutritional Chemistry, Faculty of Agriculture, Kyoto University
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