An Inducible Copper-Thiolate Complex in the Fern, Athyrium yokoscense : Involvement in Copper-Tolerance of the Fern

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概要

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• Two peaks of Cu-containing material were isolated from the soluble cytoplasmic fraction of roots of Athyrium yokoscense, a fern with a tolerance for heavy metals, by gel filtration on Bio-Gel P-30 and Sephadex G-25. Peak I (apparent molecular weight 9.5 kDa) was only observed in the case of ferns growing on Cu-contaminated soil. Peak II (apparent molecular weight 2 kDa) was found in extracts of ferns from both Cu-contaminated and uncontaminated soil. Peak I was induced in the fern collected from an uncontaminated area by cultivation in Cu-contaminated soil for 14 months. The induced Cu-binding complex present in peak I, therefore, may be involved in mechanisms of Cu-tolerance in the fern. The complex was purified by column chromatography on DEAE-cellulofine and subsequent high-performance liquid chromatography. The purified complex contained a high percentage (26.8%) of cysteine, typical of metal-binding peptides from plants.

• 日本植物生理学会の論文

著者

• 建部 到

  Department Of Chemistry Graduate School Of Science Osaka University

• Suzuki S

  Univ. Tokyo Tokyo Jpn

• Suzuki Shizuo

  Faculty Of Pharmaceutical Science Science University Of Tokyo

• Nishizono Hiromi

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• Ishii Fumi

  Chemical Laboratory, Takasaki University of Economics

• Minemura Haruko

  Faculty of Pharmaceutical Sciences, Science University of Tokyo

• Ishii Fumi

  Chemical Laboratory Takasaki University Of Economics

• Minemura Haruko

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

• Nishizono Hiromi

  Faculty Of Pharmaceutical Sciences Science University Of Tokyo

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