On the Mechanism of Radiation Induced Reduction of Cytochrome C
スポンサーリンク
概要
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Kinetic investigations for reduction of cytochrome c in aqueous solution induced by cobalt-60 gamma rays have been carried out. Initial reduction yield of cytochrome c is about 5 as limiting value. The decrease in initial reduction yield in presence of thallous ion as a radical scavenger with ferricytochrome c provides some evidences that OH radicals can contribute to reduction through some possible intermediate. The effects of concentration ratio in ferro-ferricytochrome c and thallous ion-ferricytochrome c systems on initial reduction yield were investigated. The results can be explained on the basis of some reaction scheme based on the contribution of OH radicals to reduction of ferricytochrome c. The following rate constants were determined by kinetic treatment of the results. k_<OH+RH2Fe1+>=5×10^<10>M^<-1>sec^<-1> k_<OH+RH2Fe2+>=4.1×10^<10>M^<-1>sec^<-1>.
- 日本放射線影響学会の論文
著者
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増田 高広
東京都立大学理学部化学科
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近藤 正春
東京都立大学理学部化学科
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増田 高広
Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
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近藤 正春
Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
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松田 日吉
Department of Chemistry, Faculty of Science, Tokyo Metropolitan University
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松田 日吉
Department Of Chemistry Faculty Of Science Tokyo Metropolitan University
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