自然環境より単離したThiobacillus ferrooxidansの鉄酸化酵素及ぴ硫化水素酸化酵素活性(英文)
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概要
- 論文の詳細を見る
鉄酸化酵素と硫化水素酸化酵素の両方が硫化鉱石からの金属イオンのバクテリアリーチングに関与していること、銅鉱石から溶出する銅イオンの量が鉄酸化細菌の菌株間で異なることが知られている。鉄酸化酵素及び硫化水素酸化酵素活性が自然環境から単離した鉄酸化細菌に対して決定された。200株の鉄酸化細菌の鉄酸化酵素及び硫化水素酸化酵素活性は、それぞれ、1.20-1.65γmol/mg/min及び0.11-2.80γmol/mg/minの範囲にあった。これら菌株間において、鉄酸化酵素ではなく硫化水素酸化酵素活性に大きく違いがあるという発見は、前者ではなく後者がこの細菌のバクテリアリーチング活性を決定する酵素であることを示唆している。It has been reported that both iron oxidase and hydrogen sulfide: ferric ion oxidoreductase (SFORase) were involved in bacterial leaching of metal ions from sulfide ores, and the amount of Cu2+ solubilized from copper ore by iron-oxidizing bacterium differed from strain. The activities of iron oxidase SFORase of iron-oxidizing bacteria isolated from the natural environments were determined. Iron-oxidizing activity and SFORase activity of 200 strains ranged from 1.20-1.65γmol/mg/min and from 0.11-2.80 γmol/mg/min, respectively. The findings that a remarkable difference was observed in the levels of SFORase activity, but not in iron-oxidizing activity, suggest that SFORase, but not iron oxidase, is the enzyme that determines the bacterial leaching activity of this bacterium.
- 1998-02-01
著者
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杉尾 剛
岡山大学農学部
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Sugio Tsuyoshi
Division Of Biological Function And Genetic Resources Science Faculty Of Agriculture Okayama Univers
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Sugio Tsuyoshi
Department Of Agricultural Chemistry Faculty Of Agriculture Okayama University
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Sugio Tsuyoshi
Department Of Biological Function And Genetic Resources Science Okayama University
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Sugio T
Okayama Univ. Okayama Jpn
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