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Structure and function of metal-binding human metallothionein

Research Project

Project/Area Number 11450315
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 生物・生体工学
Research InstitutionOsaka University

Principal Investigator

MUROOKA Yoshikatsu  Osaka Univ. Eng. Professor, 大学院・情報科学研究科, 教授 (60029882)

Co-Investigator(Kenkyū-buntansha) HIRAYAMA Noriaki  Tokai Univ. Eng. Professor, 大学院・医学研究科, 教授 (70238393)
ONO Hisayo  Osaka Univ. Eng. Assis. Prof., 遺伝情報実験センター, 助手 (40224274)
YAMASHITA Mitsuo  Osaka Univ. Eng. Assoc. Prof., 大学院・工学研究科, 助教授 (40220347)
Project Period (FY) 1999 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥14,800,000 (Direct Cost: ¥14,800,000)
Fiscal Year 2002: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 2001: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2000: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1999: ¥7,400,000 (Direct Cost: ¥7,400,000)
Keywordsmetallothionein / heavy metal binding protein / Cd / Zn / molecular design / DNA binding / Arsenic
Research Abstract

Mammalian metallothionein (MT) binds 7 divalent metal ions to its 20 cysteines. It has a role as a cellular reservoir for zinc and in distribution of zinc and is although thought to participate in detoxification of heavy metals and in antioxidant defenses. MT is a suitable model for investigating molecular interactions relating to the handling of metals in cells. However, the production of functional MT proteins in microoganisms has been limited because of the instability of MT. The supply of MT for research, therefore, continues to rely on its purification from mammalian tissue, in particular because rather large quantities can be prepared from livers of animals in which MT has been induced by cadmium.
I) We developed the overproduction system for MT as an intein fusion protein, purified by affinity chromatography, cleaved proteolytically by incubation with DTT, and prepared by reconstitution of thionein with cadmium or zinc.
2) To increase the binding ability and to stabilize MT, we designed genes for dimeric and tetrameric MTs and the genes were successfully overexpressed in Escherichia coli to generate functional oligomeric MTs.
3) Arsenic is a toxic element that is found in the atmosphere, as well as in quantic and terrestrial environments. We have demonstrated that more than 6 gram atoms of AS^<3+> bind one molecule of human MT by UV absorption spectroscopy, ICP-AES, and MALDI-TOF-MS.
4) We have constructed a new metal-binding site in the human MT-2, using the protein as a scaffold to investigate the structure and function of metal-binding. To evaluate the metal-binding affinity of the mutant proteins, we performed pH titrations of wild-type and mutant proteins.
5) We found that wild-type and mutant MTs bound DNA but the two MTs showed different affinity of binding to DNA.

Report

(5 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (52 results)

All Other

All Publications (52 results)

  • [Publications] S.-H.Hong: "Molecular design of novel metal-binding oligomeric human metallothioneins"Applied Microbiology and Biotechnology. 54. 84-89 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.-H.Hong: "High yield expression and single step purification of human thionein/metallothionein"Protein Expression and Purification. 21(1). 243-250 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Murooka: "Genetic design of stable metal-binding biomolecules, oligomeric metallothioneins"Biocatalysis and Biotransformation. 19. 399-412 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Yoshida, et al.: "Bacterium-based heavy metal biosorbents : Enhanced uptake of cadmium by E. coli expressing a metallothionein fused to β-galactosidase"Bio Techniques. 32(3). 551-558 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Toyama, et al.: "Alteration of substrate specificity of cholesterol oxidase from Streptomyces sp. by site-directed mutagenesis"Protein Engineering. 15(6). 477-483 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Toyama, et al.: "Interactions of arsenic with human metallothionein-2"Journal of Biochemistry. 132. 217-221 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Murooka, et al.: "Variation of the amino acid content of Arabidopsis seeds by expressing soybean aspartate aminotransferase gene"Journal of Bioscience and Bioengneering. 94(3). 225-230 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.Sriprang, et al.: "A novel bioremediation system for heavy metals using the symbiosis between leguminous plant and genetically engineered rhizobia"Journal of Biotechnology. 99. 279-293 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Yoshida, et al.: "Bactenum-based heavy metal biosorbents : Enhanced uptake of cadmium by E. coli expressing a metallothionein fused to β-galactosidase"Bio Techniques. 32(3). 551-558 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Kawamoto, et al.: "Toward elucidating the full spectrum of mite allergens -state of the art"Journal of Bioscience and Bioengneering. 94(4). 285-298 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.Sriprang, et al.: "Enhanced accumulation of Cd^<2+> by a Mesorhizobium sp. transformed with a gene from Arabidopsis thaliana coding for phytochelatin synthase"Applied Environmental Microbiology. 69(3)(in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 鈴木孝仁編集: "微生物の資材化:研究の最前線"ソフトサイエンス社. 364 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Nishikawa, Y.Murooka: "Biotechnology & Genetic Engineering Reviews. Vol.18"Intercept, Andover, England (ed. S. E. Harding). 149-170 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 室岡義勝(編集委員長): "生物工学実験書(改訂版)"日本生物工学会編、培風館. 1-480 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Murooka, et al.: "Biotechnology in Sustainable Biodiversity and Food Security"Science Publisher Inc., Plymouth, UK(ed. B. N. Prasad). 31-39 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.-H.Hong, M.Gohya, H.Ono, H.Murakami, M.Yamashita, N.Hirayama, and Y.Murooka: "Molecular design of novel metal-binding oligomeric human metallothioneins"Appl. Microbiol. Biotechnol.. 54. 84-89 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.-H.Hong, M.Toyama, W.Maret, and Y.Murooka: "High yield expression and single step purification of human thionein/metallothionein"Protein Expr. Purif.. 21(1). 243-250 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Y.Murooka, M.Toyama, S.-H.Hong, M.Gohya, H.Ono, M.Yamashita, and N.Hirayama: "Genetic design of stable metal-binding biomolecules, oligomeric metallothioneins"Biocatalysis and Biotransformation. 19. 399-412 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] N.Yoshida, T.Kato, T.Yoshida, K.Ogawa, M.Yamashita, and Y.Murooka: "Bacterium-based heavy metal biosorbents : Enhanced uptake of cadmium by E. coli expressing a metallothionein fused to β-galactosidase"BioTechniques. 32(3). 551-558 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Toyama,M., Yamashita,M., Yoneda,M., Zaborowski,A., Nagato,M., Ono,H., Hirayama,N., and Murooka,Y.: "Alteration of substrate specificity of cholesterol oxidase from Streptomyces sp. by site-directed mutagenesis"Protein Eng.. 15(6). 477-483 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Toyama, M.Yamashita, N.Hirayama, and Y.Murooka: "Interactions of arsenic with human metallothionein-2"J. Biochem.. 132. 217-221 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.Sriprang, M.Hayashi, M.Yamashita, H.Ono, K.Saeki, and Y.Murooka: "A novel bioremediation system for heavy metals using the symbiosis between leguminous plant and genetically engineered rhizobia"J. Biotechnol.. 99. 279-293 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] R.Sriprang, M.Hayashi, H.Ono, M.Takagi, K.Hirata, and Y.Murooka: "Enhanced accumulation of Cd^<2+> by a Mesorhizobium sp. transformed with a gene from Arabidopsis thaliana coding for phytochelatin synthase"Appl. Environ. Microbiol.. 69(3), (in press). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Kawamoto, T.Aki, M.Yamashita, A.Tategaki, T.Fujimura, S.Tsuboi, T.Katsutani, O.Suzuki, S.Shigeta, Y.Murooka, and K.Ono: "Toward elucidating the full spectrum of mite allergens-state of the art"J. Biosci. Bioeng.. 94(4). 285-298 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] M.Toyama, et al.: "Alteration of substrate specificity of cholesterol oxidase from Streptomyces sp.by site-directed mutagenesis"Protein Engineering. 15(6). 477-483 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] M.Toyama, et al.: "Interactions of arsenic with human metallothionein-2"Journal of Biochemistry. 132. 217-221 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Y.Murooka, et al.: "Variation of the amino acid content of Arabidopsis seeds by expressing soybean aspartate aminotransferase gene"Journal of Bioscience and Bioengneering,. 94(3). 225-230 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] R.Sriprang, et al.: "A novel bioremediation system for heavy metals using the symbiosis between leguminous plant and genetically engineered rhizobia"Journal of Biotechnology. 99. 279-293 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] N.Yoshida, et al.: "Bacterium-based heavy metal biosorbents : Enhanced uptake of cadmium by E. coli expressing a metallothionein fused to β-galactosidase"Bio Techniques. 32(3). 551-558 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] P.Kiatpapan, et al.: "Genetic manipulation system in propionibacteria"Journal of Bioscience and Bioengineering. 93(1). 1-8 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 室岡義勝(編集委員長): "生物工学実験書(改訂版)"日本生物工学会編、培風館. 480 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.H.Hong: "High yield expression and single step purification of human thionein/metallothionein"Protein Expression and Purification. 21(1). 243-250 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] H.Kobayashi: "DNA synthesis and fragmentation in bacteroids during Astragalus sinicus root nodule development"Biosc.Biotech.Bichem. 65(3). 510-515 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] K.Nanda: "Characterizations of acetic acid bacteria in traditional acetic acid fermentation of rice vinegar(komesu)and unpolished rice vinegar(kurosu)produced in Japan"Applied and Environmental Microbiology. 67(2). 986-990 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] P.Kiatpapan: "Construction of an expression vector for propionibacteria and its use in production of 5-aminolevulinic acid by Propionibacterium freudenreichii"Appl.Microbiol. Biotechnol. 56. 144-149 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Murooka: "Genetic design of stable metal-binding biomolecules, oligomeric metallothioneins"Biocatalysis and Biotransformation. 19. 399-412 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] P.Kiatpapan: "Heterologous expression of a gene encoding cholesterol oxidase in probiotic strains of Lactobacillus plantarum and Propionibacterium freudenreichii under the control of native promoters"J.Biosci. Bioeng.. 92(5). 459-465 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Nishikawa, Y.Murooka: "Biotechnology & Genetic Engineering Reviews. Vol.18"Intercept, Andover, England(ed.S.E.Harding). 149-170 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.-H.Hong: "Molecular design of novel metal-binding oligomeric human metallothioneins."Applied Microbiology and Biotechnology. 54. 84-89 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] H.Nakayama: "Ectoine, the compatible solute of Halomonas elongata, confers hyperosmotic tolerance in cultured tobacco cells."Plant Physiology. 122. 1239-1247 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] P.Kiatpapan: "Characterization of pRGOl, a plasmid from Propionibacterium acidipropionici, and its use for development of a host-vector system in Propionibacteria."Applied and Environmental Microbiology. 66(11). 4688-4695 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] P.Kiatpapan: "Molecular characterization of Lactobacillus plantarum genes for β-ketoacyl-acyl carrier protein synthase III (fabH) and acetyl coenzyme A carboxylase (accBCDA) which are essential for fatty acid biosynthesis."Applied and Environmental Microbiology. 67(1). 426-433 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.-H.Hong: "High yield expression and single step purification of human thionein/metallothionein."Protein Expression and Purification. 21(1). 243-250 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Murooka: "Genetic design of stable metal-binding biomolecules, oligomeric metallothioneins"Biocatalysis and Biotransformation. 9(3)(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 鈴木孝仁 ら 編集: "微生物の資材化:研究の最前線"ソフトサイエンス社. 364 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] S.Nishikawa: "Rhodobacter sphaeroides mutants which accumulate 5-aminolivulinic acid under aerobic and dark conditions"Journal of Bioscience and Bioengineering. 87(6). 798-804 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 山下光雄: "有用酵素タンパク質の機能改良に関する研究"生物工学会誌. 77(8). 345-357 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 西矢芳昭: "機能改変コレステロールオキシダーゼの開発と応用"生物工学会誌. 77(10). 429-432 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Yoshinobu Kaneko: "Development of a host-vector system for Lactobacillus plantarum L137 isolated from a traditional fermented food produced in the Philippines."Journal of Bioscience and Bioengineering. 89(1)(印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.-H. Hong: "Molecular design of novel metal-binding oligomeric human metallothioneins"Applied Microbiology and Biotechnology. (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Nakayama: "Ectoine,the compatible solute of Halomonas elongata,confers hyperosmotic tolerance in cultured tobacco cells"Plant Physiology. (印刷中). (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] M.Yamashita: "Isolation,characterizaion, and molecular clonoing of a thermostable xylitol oxidase from Streptomyces sp. IKD472"Journal of Bioscience and Bioengineering. 89(1)(印刷中). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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