CONTRIBUTION OF VITAMIN B12 TO THE ACTIVATION OF APOENZYME FOR THE FORMATION OF PYRUVATE OXIDASE SYSTEM IN RATS

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概要

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• 1. The apoenzyme activity of Pyruvate oxidase system in the tissue of B12-deficient rats was studied in vitro under various additions of B12, cytochrome c, niacinamide, DPN, DPT, lipoic acid, CoA, ATP, FAD, glutathione as well as fumaric acid. The decrease of the apoenzyme activity in B12-eficient rats was always recognized in the uptake of O2 and the evolution of CO2 after adding pyruvate.FIG. 3 Difference in Activities for Pyruvate Oxidation between Washed Liver Homogenate and Untreated Whole Homogenate.FIG. 4 Effect of FAD and Fumarate on the Activity of Pyruvate Oxidation in Washed Liver Homogenate of B12-deficient Rats.2. The animals receiving 0.2μg of B12 per os daily before experiments showed always an increased apoenzyme activity of pyruvate oxidase system.3. The results seem to lead to the conclusion that vitamin B12 contributes to the activation of the apoenzyme in pyruvate oxidase system in rats.

• 日本ビタミン学会の論文

著者

• Suzuki Takao

  Laboratory For Evolutionary Morphology Center For Developmental Biology(cdb) Riken

• SAHASHI YOSHIKAZU

  Laboratory of Biochemistry and Nutrition, Department of Agricultural Chemistry, Tokyo Agricultural University

• MAEKAWA AKIO

  Laboratory of Biochemistry and Nutrition, Department of Agricultural Chemistry, Tokyo Agricultural University

• OSHIMA TAKEICHI

  Laboratory of Biochemistry and Nutrition, Department of Agricultural Chemistry, Tokyo Agricultural University

• IWAMOTO KIICHI

  Department of Agricultural Chemistry, Faculty of Agriculture, Mie University

• HAYASHI JUNZO

  Kyoritsu Women's University

• SAHASHI YOSHIKAZU

  Laboratories of Biochemistry, Shiga Agricultural College

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