Increase in Fe2+-Producing Activity during Growth of Acidithiobacillus ferrooxidans ATCC23270 on Sulfur
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概要
- 論文の詳細を見る
When Acidithiobacillus ferrooxidans ATCC23270 cells, grown for many generations on sulfur were grown in sulfur medium with and without Fe3+, the bacterium markedly increased not only in iron oxidase activity but also in Fe2+-producing sulfide:ferric ion oxidoreductase (SFORase) activity during the early log phase, and retained part of these activities during the late log phase. The activity of SFORase, which catalyzes the production of Fe2+ from Fe3+ and sulfur, of sulfur-grown cells was approximately 10–20 fold higher than that of iron-grown cells. aa3 type cytochrome c oxidase, an important component of iron oxidase in A. ferrooxidans, was partially purified from sulfur-grown cells. A. ferrooxidans ATCC23270 cells grown for many generations on sulfur had the ability to grow on iron as rapidly as that did iron-grown cells. These results suggest that both iron oxidase and Fe2+-producing SFORase have a role in the energy generation of A. ferrooxidans ATCC23270 from sulfur.
- 社団法人 日本農芸化学会の論文
著者
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Sugio Tsuyoshi
Division of Bioscience, The Graduate School of Natural Science and Technology, Okayama University
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TAKEUCHI Fumiaki
Environmental Management Center, Okayama University
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Taha Taher
Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
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Kanao Tadayoshi
Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
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