Volatilization of Metal Mercury from Organomercurials by Highly Mercury-Resistant<i>Acidithiobacillus ferrooxidans</i>MON-1
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- SUGIO Tsuyoshi
- Division of Bioscience, The Graduate School of Natural Science and Technology, Okayama University
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- KOMODA Tomoe
- Faculty of Agriculture, Okayama University
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- OKAZAKI Yuko
- Faculty of Agriculture, Okayama University
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- TAKEDA Yuki
- Faculty of Agriculture, Okayama University
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- NAKAMURA Sousaku
- 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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- タイトル別名
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- Volatilization of Metal Mercury from Organomercurials by Highly Mercury-Resistant Acidithiobacillus ferrooxidans MON-1
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The iron-oxidizing bacterium Acidithiobacillus ferrooxidans MON-1 is highly resistant not only to mercuric chloride (HgCl2) but also to organomercurials such as methylmercury chloride (MMC). We have found that cytochrome c oxidase, purified from strain MON-1, reduces Hg2+ to volatilizable metal mercury (Hg0) with reduced mammalian cytochrome c or Fe2+ as an electron donor. In this study we found that cytochrome c oxidase can volatilize Hg0 from MMC as well as from Hg2+ with reduced mammalian cytochrome c or c-type cytochrome purified from strain MON-1 as an electron donor. We also found that MMC-Hg0 volatilization activity is present in the MON-1 plasma membrane but not in the cytosol. These activities were strongly inhibited by sodium cyanide (NaCN) and the antibody produced against purified MON-1 cytochrome c oxidase. This is the first report to indicate that cytochrome c oxidase is involved in the degradation of organomercurials in microorganisms.
収録刊行物
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- Bioscience, Biotechnology, and Biochemistry
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Bioscience, Biotechnology, and Biochemistry 74 (5), 1007-1012, 2010
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
- 1390001206477998464
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- NII論文ID
- 10027555095
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- NII書誌ID
- AA10824164
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- ISSN
- 13476947
- 09168451
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- NDL書誌ID
- 10688838
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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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