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Expression of ferredoxin gene family and its physiological significance

Research Project

Project/Area Number 02660086
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 応用生物化学・栄養化学
Research InstitutionNagoya University

Principal Investigator

HASE Toshiharu  Nagoay University Associate Professor Department of Agricultural Chemistry, 農学部, 助教授 (00127276)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1991: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1990: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsMaize / ferrecoxin / photosynthesis / gene cloning / glutamate synthase / glutamine synthetase / 遺伝子発現 / 光誘導
Research Abstract

Maize (Zea mays L.) has two types of ferredoxin (Fd) differentially expressed in photosynthetic and non-photosynthetic organs. To understand structural characteristics of the isoproteins and molecular mechanism of the differential expression of their genes, we have cloned two different maize cDNAs, which encode the entire precursor polypeptides of Fd I and Fd III composed of 150 and 152 amino acid residues, respectively. The gene transcript for Fd I was restricted to leaves and their levels increased markedly upon illumination, whereas that for Fd III was detected in all organs and its accumulation was not light dependent.
To clarify the biosynsthetic pathway of the Fds present in different organs, in vitro synthesized precursors were examined to be imported into chloroplasts and etioplasts. Both Fds were processed to the mature size and assembled with the Fe-S cluster to become a functional molecule. The cluster assembly occured without tight coupling to the translocation, and the process was time and temperature dependent and did not require light.
A cDNA fragment encoding the mature polypeptide of Fd III was expressed in E. coli, and the Fd was synthesized as a holo-form assembled with the cluster. Comparison of electron transfer activity of the two types of Fd showed that Fd III was superior as an electron acceptor from NADPH, and Fd I was superior as an electron donor for NADP, in reactions catalyzed by Fd-NADP reductase from maize leaf. The CD spectra of the two Fds also indicated a subtle difference in the geometry of their iron-sulfur clusters. These results are consistent with the view that photosynthetic and non-photosynthetic Fds may be functionally differentiated.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] T.Hase: "Molecular cloning and differential expression of the maize ferredoxin gene family" Plant Physiology. 96. 77-83 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Sakakibara: "Molecular cloning and characterization of complementary DNA encoding for ferredoxin-dependent glutamate synthase in maize leaf" J.Biol.Chem.266. 2028-2035 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Suzuki: "Plastid import and iron-sulfur cluster assembly of photosynthetic and nonphotosynthetic ferredoxin isoproteins in maize" Plant Physiology. 97. 375-380 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Hase: "Expression of maize ferredoxin cDNA in Escherichia coli.Comparision of photosynthetic and nonphotosynthetic ferredoxin,and their chimeric molecule" Plant Physiology. 97. 1395-1401 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Sakakibara: "Molecular cloning of the family of glutamine synthetase genes from maize:expression of genes for glutamine synthetase and ferredoxin-dependent glutamate synthase in photosynthetic and non-photosyntheitc tissues" Plant Physiology. 33. 49-58 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Hase et al: "Molecular cloning and differential expression of the maize ferredoxin gene family" Plant Physiology. 96. 77-83 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sakakibara et al: "Molecular cloning and characterization of complementary DNA encoding for ferredoxin-dependent glutamate synthase in maize leaf" J. Biol. Chem.266. 2028-2035 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Suzuki et al.: "Plastid import and iron-sulfur cluster assembly of photo-synthetic and nonphotosynthetic ferredoxin isoproteins in maize" Plant physiology. 97. 375-380 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Hase et al.: "Expression of maize ferredoxin cDNA in Escherichia coli. Comparison of photosynthetic and nonphotosynthetic isoproteins and their chimeric molecule" Plant Physiology. 97. 1395-1401 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sakakibara et al.: "Molecular cloning of the family of glutamine synthetase genes from maize : expression of genes for glutamine synthetase and ferredoxin-dependent glutamate synthase in photosynthetic and non-photosynthetic tissues" Plant Cell Phsiology. 33. 49-58 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Hase: "Molecular cloning and differential expression of the maize ferredoxin gene family" Plant Physiology. 96. 77-83 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Sakakibara: "Molecular coloning and characterization of complementary DNA encoding for ferredoxinーdependent glutamate synthase in maize leaf" Journal of Biological Chemistry. 266. 2028-2035 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Suzuki: "Plastid import and ironーsulfur cluster assembly of photosynthetic and nonphotosynthetic ferredoxin isoproteins in maize" Plant Physiology. 97. 375-380 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Hase: "Expression of maize ferredoxin cDNA in Escherichia coli.Comparison of photosynthetic and nonphotosynthetic ferredoxin isoproteins,and their chimeric molecule" Plant Physiolgy. 97. 1395-1401 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Sakakibara: "Molecular cloning of the family of glutamine synthetase genes from maize:expression of genes fir glutamine synthetase and ferredoxindependent glutamate sythase in photosynthetic and nonーphotosynthetic tissues" Plant Cell Physiology. 33. 49-58 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Sakakibara: "Molecular cloning and characterization of complementary DNA encoding for ferredoxinーdependent glutamate synthase in maize leaf" Journal of Biological Chemistry. 266. 2028-235 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Hase: "Molecular cloning and differential expression of the maize ferredoxin gene family" Plant Physiology. (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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