Occurrence and characterization of cyanocobalamin reductase (NADPH; CN-eliminating) involved in decyanation of cyanocobalamin in Euglena gracilis.
スポンサーリンク
概要
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The activity of an enzyme involved in decyanation of cyanocobalamin was found in the cell homogenate of Euglena gracilis. The enzyme essentially required FAD or FMN, and NADPH as cofactors. The apparent Km for cyanocobalamin and NADPH were 7.1μM and 0.2 mM, respectively. The enzyme reaction obeyed allosteric kinetics towards FAD ([FAD]0.5=30μM, n=2.7; as calculated by the Hill plots). The Euglena enzyme was located in the mitochondria.
- 財団法人 学会誌刊行センターの論文
著者
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中野 長久
Department of Agricultural Chemistry, University of Osaka Prefecture
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北岡 正三郎
Department of Agricultural Chemistry, Faculty of Agriculture, University of Osaka
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渡辺 文雄
Department of Agricultural Chemistry, University of Osaka Prefecture
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沖 裕二
Department of Agricultural Chemistry, University of Osaka Prefecture
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- Occurrence and characterization of cyanocobalamin reductase (NADPH; CN-eliminating) involved in decyanation of cyanocobalamin in Euglena gracilis.