Respiratory Isozyme, Two Types of Rusticyanin of Acidithiobacillus ferrooxidans(Microbiology & Fermentation Technology)

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概要

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• Among the members of the copper protein superfamily, the type I enzyme rusticyanin, which is found as an electron carrier in the oxidative respiratory chain of Acidithiobacillus ferrooxidans, is the only one to have both a high redox potential and acid stability. Here we report that two forms of the rusticyanin gene (rus) are present in the genomes of some strains of A. ferrooxidans. The more common form of rus (type-A) was found to be present in all six strains studied, including those harboring only a single copy of the gene. In addition a less common form (type-B) occurred in strains harboring multiple copies of the gene. The two genes were expressed as rusticyanin isozymes with differing surface charges due to differences in their amino acid composition. Still, the copper coordination sites were completely conserved, thereby maintaining the high redox potential necessary for an electron carrier.

• 社団法人日本農芸化学会の論文
• 2003-05-23

著者

• Ohmura Naoya

  Department Of Bio-science Central Research Institute Of Electric Power Industry

• Sasaki K

  Department Of Bio-science Central Research Institute Of Electric Power Industry

• SASAKI Kazuhiro

  Central Research Institute of Electric Power Industry, Department of Bio-science

• IDA Chigusa

  Chiba University, Department of Biotechnology, Graduate School of Science and Technology

• ANDO Akikazu

  Chiba University, Department of Biotechnology, Graduate School of Science and Technology

• MATSUMOTO Norio

  Central Research Institute of Electric Power Industry, Department of Bio-science

• SAIKI Hiroshi

  Central Research Institute of Electric Power Industry, Department of Bio-science

• OHMURA Naoya

  Central Research Institute of Electric Power Industry, Department of Bio-science

• Sasaki K

  Graduate School Of Engineering Hiroshima Kokusai Gakuin University

• Ando A

  Division Of Applied Life Sciences Graduate School Of Agriculture Kyoto University

• Ida Chigusa

  Department Of Biotechnology Graduate School Of Science And Technology Chiba University

• Ando Akikazu

  Department Of Bioresources Chemistry Faculty Of Horticulture Chiba University

• Saiki H

  Central Res. Inst. Of Electric Power Ind. Chiba Jpn

• Saiki Hiroshi

  Department Of Wood Science And Technology Faculty Of Agriculture Kyoto University

• Matsumoto Norio

  Central Research Institute Of Electric Power Industry Department Of Bio-science

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