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Studies on gamma-Glutamyltranspeptidase of Escherichia coli

Research Project

Project/Area Number 63560102
Research Category

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

Allocation TypeSingle-year Grants
Research Field 発酵・醸造
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KUMAGI Hidehiko  Kyoto Univ., Fac.Agric., Assoc. Prof., 農学部, 助教授 (70027192)

Co-Investigator(Kenkyū-buntansha) YANO Toshihiro  Kyoto Univ., Fac.Agric., Official. Researcher, 農学部, 教務職員 (30135553)
YAMAMOTO Kenji  Kyoto Univ., Fac.Agric., Instructor, 農学部, 助手 (70109049)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1989: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1988: ¥1,300,000 (Direct Cost: ¥1,300,000)
Keywordsgamma-Glutamyltranspeptidase / Escherichia coli / gamma-Glutamyl compounds / Glutathione / グルタチオン / γーグルタミルトランスペプチダーゼ / γーグルタミルトランスペプチダーゼ遺伝子 / 塩基配列 / γーグルタミル化合物
Research Abstract

1. The nucleotide sequence of ggt, the gene that codes for gamma -glutamyltrans- peptidase(GGT) of Escerichia coli K-12, was determined. The sequence contains a single open reading frame encoding the signal peptide(25 amino acid residues) and large(365) and small(190) subunits, in that order. This result suggests that E. coli gamma-glutamyltranspeptidase is processed posttranslationally, as in the case of mammalian GGTs. The amino acids sequence was compared with those of mammalian GGTs and we found that E. coli GGT has 30% homology with mammalian ones and most part of the protein is conserved through conservative substitutions of amino acid.
2. By a simple two-step method, a large amount of GGT was purified from E. coli SH643 harboring ggt-cloned plassid pSH101.
3. S-Benzyl glutathione methyl ester, gamma-glutamyl-L-tyrosine methylester and gamma - glutamyl-L-histidine were synthesized by GGT in the yield of 31.2, 35.7 and 41.2 g/L, respectively.
4. Cloning of the structure gene of ggt into the high-expression vector pKK223-3 was carried out by the following two-step method. First, EcoRV fragment which encodes the large subunit was inserted into the vector plasmid. And then the HpaI-PstI fragment of ggt which encodes small subunit was tried to insert into the vector having the EcoRV fragment. Now we are successful in the first step.
5. Ser75 residue in the small subunit was replaced with Ala or Cys by the method of site directed mutation. The mutant cells exhibited almost same activity with the wild type. The properties of mutant enzymes are under investigation now.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Hideyuki Suzuki: "Molecular cloning of Escherichia coli K-2 ggt and rapid isolation of γ-glutamyltranspeptidase" Biochem.Biophys.Res.Commun.150. 33-38 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hidehiko Kumagai: "Synthesis of γ-glutamyl-DOPA from L-glutamine and L-DOPA by γ-glutamyltranspeptidase of Escherichia coli K-12" Agric.Biol.Chem.52. 1741-1745 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 熊谷英彦: "細菌のγ-グルタミルトランスペプチタ-ゼ" 蛋白質、核酸、酵素. 33. 1545-1550 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hidehiko Kumagai: "Unilization of the γ-glutamyltranspeptidase reaction for glutathione synthesis" J.Biotechnol.9. 129-138 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hidehiko Kumagai: "Enzymatic synthesis of γ-glutamyl-tyrosine methyl ester from L-glutamine and L-tyrosine methyl ester with Escherichia coli K-12 γ-glutamyltranspeptidase" Agric.Biol.Chem.53. 1429-1430 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hidehiko Kumagai: "Enzymatic synthesis of γ-glutamyl-L-histidine by γ-glutamyltranspeptidase from Escherichia coli K-12" Lett.Appl.Microbiol.8. 143-146 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 鈴木秀之: "Escherichia coli K-12のγ-グルタミルトランスペプチダ-ゼ" 生化学. 61. 491-496 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hideyuki Suzuki: "DNA sequence of the Escherichia coli K-12 γ-glutamyltranspeptidase gene,ggt" J.Bacteriol.171. 5169-5172 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hidehiko Kumagai: "Escherichia coli K-12 mutants lacking γ-glutamyltranspeptidase and Molecular cloning of ggt gene,in Glutatione Centennial:Molecular Perspectives and Clinical Implications" ed.by N.Taniguchi,T.Higashi,Y.Sakamoto and A.Meister,Academic Press,161-175 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Hidehiko Kumagai: "Utilization of the γ-glutamyltranspeptidase reaction for glutathione synthesis" J.Biotechnol.9. 129-138 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hidehiko Kumagai: "Enzymatic systhesis of γ-glutamyl-tyrosine methyl ester from L-glutamine and L-tyrosine methyl ester with Escherichia coli K-12 γ-glutamyltranspeptidase" Agric.Biol.Chem.53. 1429-1430 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hidehiko Kumagai: "Enzymatic systhesis of γ-glutamyl-L-histidine by γ-glutamyltranspeptidase from Escherichia coil K-12" Lett.Appl.Microbiol. 8. 143-146 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 鈴木秀之: "Escherichia coil K-12のγ-グルタミルトランスペプチダ-ゼ" 生化学. 61. 491-496 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hideyuki Suzuki: "DNA sequence of the Escherichia coli K-12 γ-glutamyltranspeptidase gene,ggt" J.Bacteriol.171. 5169-5172 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hidehiko Kumagai: "Escherichia coli K-12 mutants lacking γ-glutamyltranspeptidase and Molecular cloning of ggt gene,in Glutathione Centennial:Molecular Perspectives and Clinical Implications" ed.by N.Taniguchi,T.Higashi,Y.Sakamoto and A.Meister,Academic Press,pp.161-175 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Hideyuki Suzuki: Biochem.Biophys.Res.Commun.150. 33-38 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hidehiko Kumagai: Agric.Biol.Chem.52. 1741-1745 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 熊谷英彦: 蛋白質・核酸・酵素. 33. 1545-1550 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hidehiko Kumagai: J.Baiotechnol.(1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hidehiko Kumagai.: Agric.Biol.Chem.53. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hidehiko Kumagai: Lett.Appl.Microbiol.(1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 鈴木秀之: 生化学. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Hideyuki Suzuki: J.Bacteriol.

    • Related Report
      1988 Annual Research Report
  • [Publications] Hidehiko Kumagai: "Glutathione Centinnial:Molecular Perspectives and Clinical Implications" Academic Press Inc., (1989)

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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