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The structure and the mechanism of substrate recognition of the Lysyl-tRNA synthetase from a mesothermophilic bacteria

Research Project

Project/Area Number 12680643
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Functional biochemistry
Research InstitutionKinki University

Principal Investigator

TONOMURA Benichiro  Kinki University, School of Biology Oriented Science and Technology, Professor, 生物理工学部, 教授 (20026545)

Co-Investigator(Kenkyū-buntansha) TAKITA Teisuke  Kyoto University Graduate School, Division of Agricultural Science, Assistant Prof., 大学院・農学研究科, 助手 (70263126)
MORIMOTO Koichi  Kinki University, School of Biology Oriented Science and Technology, Lecturer, 生物理工学部, 講師 (10319741)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2001: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2000: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordsaminoacyl-tRNA synthetase / lysyl-tRNA synthetase / protein crystallization / mechanism of protein- substrate recognition / protein fluorescence
Research Abstract

(1) The base sequence of the cloned gene of the lysyl-tRNA synthetase from a mesothermophile, Bacillus stearothermophilus was determined. The primary structure of the enzyme (B.s.LysRS) was deduced from the base sequence of the gene. Comparative studies were made on the primary structures of the gene and the protein of B.s.Lys RS. and the strategy for thermostability of the enzyme was discussed.
(2) A highly purified preparation of B.s.LysRS was subjected to crystallization for the structural analysis. An orthorhombic crystal suitable for the X-ray analysis was obtained. The X-ray diffraction on this crystal gave 2.63A resolution. The model building of B.s.LysRS molecule is underway with these diffraction data by the molecular replacement method with the structure of E. coli LysRS(U) as reference.
(3) Functional analysis of B.s.LysRS : Among the amino acid residues that constitute the substrate binding site, those which locate in the position being able to interact with the substrate L-lysine were deduced from the analogy to the structure of E.coli LysRS. Those residues were replaced by other amino acid by the method of site-directed mutagenesis. The kinetic parameters of those artificial mutant LysRS in the ATP-PPi exchange reaction and the equilibrium parameters in the binding of L-lysine and the mutant enzyme, as measured with the protein fluorescence change as probe, were determined and compared with those of the wild type enzyme, The functions of the replaced amino acid residues were discussed.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] TAKITA, Teisuke: "Lycyl-tRNA synthetase of Bacillus stearothermophilus. Molecular cloning and expression of the gene"Bioscience, Biotechnology, and Biochemistry. 64(2). 432-437 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA, Teisuke: "Lycyl-tRNA synthetase of Bacillus stearothermophilus. A few aspects on the primary structures of the gene and the enzyme"Memoirs of the Institute of Advanced Technology. Kinki University. No.6. 1-12 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 滝田禎亮: "B. stearothermophilus 由来リシルtRNA合成酵素のL-リシン結合部位に依存する芳香族アミノ酸残基の解析"日本農芸化学会誌. 74(臨時増刊). 249 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 滝田禎亮: "B. stearothermophilus 由来リシルtRNA合成酵素の基質L-リシンのα-カルボキシル基と相互作用するミノ酸残基の解析"生科学. 72(8). 1087 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 滝田禎亮: "B. stearothermophilus 由来リシルtRNA合成酵素のL-リシン結合部位に依存する芳香族アミノ酸残基の関与"生物物理. 40supplement. 32 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 滝田禎亮: "B. stearothermophilus 由来リシルtRNA合成酵素の基質L-Lysのα-カルボキシル基認識に関与するアミノ酸残基の役割"日本農芸化学会誌. 75(臨時増刊). 179 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA, Teisuke: "Lysyl-tRNA synthetase of Bacillus stearothermophilus. Molecular cloning and expression of the gene"Bioscience, Biotechnology, and Biochemistry. 64(2). 432-437 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA, Telsuke: "/Lysyl-tRNA synthetase of Bacillus stearothermophilus. A few aspects on the primary structures of the gene and the enzyme"Memoris of the Institute of Advanced Technology, Kinki University. No. 6. 1-12 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA, Teisuke: "Analysis of the aromatic amino acid residues in the L-lyslne binding site of the lysyl-tRNA synthetase of Bacillus stearothermophilus(Japanese)"Nippon Nogeikagaku Kaishi. 74(Supplement). 249 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA, Teisuke: "Analysis of the amino acid residues making interaction with the substrate L-lysine in the lysyl-tRNA synthetase of Bacillus stearothermophilus(Japanese)"Seikagaku. 72(8). 1087 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA. Teisuke: "Involvement of the aromatic amino acid residues in the L-lysine binding site of the lysyl-tRNA synthetase of Bacillus stearothermophilus(Japanese)"Seibutsu Butsurl. 40(Supplement 1). 32 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKTTA, Teisuke: "The role of the amino acid residues involved in the recognition of a -carboxyl group of substrate L-lysine in the lysyl-tRNA synthetase of Bacillus stearothermophilus(Japanese)"Nippon Nogeikagaku Kaishi. 75(Supplement). 179 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] TAKITA, Teisuke: "Lysyl-tRNA synthetase of Bacillus stearothermophilus Molecular cloning and expression of the gene"Biosci, Biotechnol. Biochem.. 64(2). 432-437 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] TAKITA, Teisuke: "Lysyl-tRNA synthetase of Bacillus stearothermophilus. A few aspects on the primary structures of the gene and the enzyme"Memoirs of the Institute of Advanced Technology, Kinki University. No.6. 1-12 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 滝田禎亮: "B.stearothermophilus由来リシルtRNA合成酵素のL-リシン結合部位に存在する芳香族アミノ酸残基の解析"日本農芸化学会誌. 74(臨時増刊). 249 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 滝田禎亮: "B.stearothermophilus由来リシルt-RNA合成酵素の基質Lリシンのα-カルボキシル基と相互作用するアミノ酸残基の解析"生化学. 72(8). 1087 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 滝田禎亮: "B.stearothermophilus由来リシルtRNA合成酵素のL-リシン結合部位に存在する芳香族アミノ酸残基の関与"生物物理. 40(Supplement1). 32 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] 滝田禎亮: "B.stearothermophilus由来リシルtRNA合成酵素の基質L-Lysのα-カルボキシル基認識に関与するアミノ酸残基の役割"日本農芸化学会誌. 75(臨時増刊). 179 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Teisuke TAKITA: "Lysyl-tRNA synthetase of Bacillus stearothermophilus.Molecular cloning and expression of the gene."Biosci.Biotechnol.Biochem.. 64(2). 432-437 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 滝田禎亮: "B.Stearothermophilu由来リジルtRNA合成酵素のL-リジン結合部位に存在する芳香族アミノ酸残基の解析"日本農芸化学会誌. 74 臨時増刊. 249 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 滝田禎亮: "B.stearothermophilus由来リジルtRNA合成酵素のL-リジン結合部位に存在する芳香族アミノ酸残基の関与"生物物理. 40 Supplement 1. S-32 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 滝田禎亮: "B.stearothermophilus由来リジルtRNA合成酵素の基質L-リジンのα-カルボキシル基と相互作用するアミノ酸残基の解析"生化学. 72(8). 1087 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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