Ferrous Iron Production Mediated by Tetrathionate Hydrolase in Tetrathionate-, Sulfur-, and Iron-Grown<i>Acidithiobacillus ferrooxidans</i>ATCC 23270 Cells
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- SUGIO Tsuyoshi
- Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
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- TAHA Taher M.
- Division of Bioscience, Graduate School of Natural Science and Technology, Okayama University
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- TAKEUCHI Fumiaki
- Environmental Management Center, Okayama University
書誌事項
- タイトル別名
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- Ferrous Iron Production Mediated by Tetrathionate Hydrolase in Tetrathionate-, Sulfur-, and Iron-Grown Acidithiobacillus ferrooxidans ATCC 23270 Cells
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When tetrathionate-grown Acidithiobacillus ferrooxidans ATCC 23270 cells were incubated with ferric ions and tetrathionate at pH 3.0, ferrous ions were produced enzymatically. Fe3+-reductase, which catalyzes Fe3+ reduction with tetrathionate, was purified to homogeneity not only from tetrathionate-grown, but also from sulfur- and iron-grown A. ferrooxidans ATCC 23270 cells. The results for apparent molecular weight measured by SDS–PAGE (52.3 kD) and the N-terminal amino acid sequences of the purified enzymes from iron-, sulfur, and tetrathionate-grown cells (AVAVPMDSTG) indicate that Fe3+-reductase corresponds to tetrathionate hydrolase. The evidence that tetrathionate-grown A. ferrooxidans ATCC 23270 cells have high iron-oxidizing activity at the early log phase, comparable to that of iron-grown ATCC 23270 cells, is supported by our finding that tetrathionate hydrolase produces Fe2+ from tetrathionate during growth on tetrathionate. This is the first report on ferric reductase activity associated with tetrathionate hydrolase.
収録刊行物
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 73 (6), 1381-1386, 2009
公益社団法人 日本農芸化学会
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詳細情報 詳細情報について
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- CRID
- 1390282681455627008
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- NII論文ID
- 10027542583
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- NII書誌ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL書誌ID
- 10267426
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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