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Development of a method for chemical synthesis of G-protein coupled receptor

Research Project

Project/Area Number 14380287
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Bioorganic chemistry
Research InstitutionOsaka University

Principal Investigator

AIMOTO Saburo  Osaka University, Institute for Protein Research, Laboratory of Protein Organic Chemistry, Professor, 蛋白質研究所, 教授 (80029967)

Co-Investigator(Kenkyū-buntansha) KAWAKAMI Toru  Osaka University, Institute for Protein Research, Laboratory of Protein Organic Chemistry, Associate Professor, 蛋白質研究所, 助教授 (70273711)
Project Period (FY) 2002 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥16,700,000 (Direct Cost: ¥16,700,000)
Fiscal Year 2005: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2004: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2003: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2002: ¥4,400,000 (Direct Cost: ¥4,400,000)
KeywordsGPCR / nociceptin receptor / peptide thioester / chemical synthesis / coupling conditions / native chemical ligation / thioester method / auxiliary / チオスルホネート基 / 7回膜貫通型受容体 / 膜蛋白質 / 選択的縮合法 / Argタグ
Research Abstract

In order to develop a synthetic method for G-protein-coupled receptors (GPCRs), we performed comprehensive studies on the factors which would be required for membrane protein synthesis. We chose the C-terminal region of opioid receptor like 1, ORL1(251-370), as a target molecule that contained the sixth and seventh transmembrane regions and the C-terminal cytosolic domain. The ORL1(251-370) was divided into three peptide segments for synthetic purpose. Each peptide segment was synthesized by the solid phase method. Peptide thioesters that contained a transmembrane region were hardly soluble in solvents used for HPLC purification. Introduction of a penta-arginine tag into a thiol moiety in the thioester enhanced the solubility of the peptide thioesters. Then the peptide segment was purified by reversed-phase HPLC much easier than before. The purified peptide thioester that contained the seventh transmembrane region was condensed with the C-terminal domain by the native chemical ligation … More . The ligation proceeded almost quantitatively under the optimized conditions in terms of the concentration of a detergent, pH of a buffer, a thiol compound as an additive and etc. However, the second coupling between a peptide thioester that contained the sixth transmembrane region and the peptide that contained the seventh transmembrane region and the C-terminal region was unsuccessful. No appropriate protecting groups were found. Then, we developed two ligation auxiliaries that permitted segment coupling without side chain protections. The auxiliaries are removed by photo-irradiation and this is ideal characteristics for membrane protein synthesis. The ORL1(251-370) is under resynthesized using these auxiliaries. We also developed a novel method for the preparation of peptide thioesters, which were free recemization at the C-terminal amino acid that formed thioester. The findings obtained through this research will greatly contribute to elucidate the structure and function of membrane proteins. Less

Report

(5 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (20 results)

All 2005 2004 2003 2002 Other

All Journal Article (18 results) Publications (2 results)

  • [Journal Article] Synthesis of the C-terminal Region of Opioid Receptor Like I in an SDS Micelle by the Native Chemical Ligation Effect of Thiol Additive and SDS Concentration on Ligation Efficiency2005

    • Author(s)
      T.Sato
    • Journal Title

      J.Peptid Sci. 11

      Pages: 410-416

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Structural Role of Glycine in Amyloid Fibrils Formed from Transmembrane alpha-Helices2005

    • Author(s)
      W.Liu
    • Journal Title

      Biochemistry 44

      Pages: 3591-3597

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Sequential Peptide Chemical Ligation by the Thioester Method and Extended Chemical Ligation2005

    • Author(s)
      T.Kawakami
    • Journal Title

      Tetrahedron Lett. 46

      Pages: 5533-5536

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Ladder-shaped polyether compound, desulfated yessotoxin, interacts with membrane-integral α-helix peptides2005

    • Author(s)
      M.Mori
    • Journal Title

      Bioorg.Med.Chem. 13

      Pages: 5099-5103

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Peptide Thioester Preparation Based on an N-S Acyl Shift Reaction Mediated by a Thiol Ligation Auxiliary2005

    • Author(s)
      T.Kawakami
    • Journal Title

      Tetrahedron Lett. 46

      Pages: 8805-8807

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Synthesis of the C-terminal Region of Opioid Receptor Like 1 in an SDS Micelle by the Native Chemical Ligation : Effect of Thiol Additive and SDS Concentration on Ligation Efficiency2005

    • Author(s)
      T.Sato
    • Journal Title

      J.Peptide Sci. 11

      Pages: 410-416

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Synthesis of the C-terminal Region of Opioid Receptor Like 1 in an SDS Micelle by the Native Chemical Ligation Effect of Thiol Additive and SDS Concentration on Ligation Efficiency2005

    • Author(s)
      T.Sato
    • Journal Title

      J.Peptide Sci. 112

      Pages: 410-416

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Peptide Thioester Preparation Based on an N-S Acyl Shift Reaction Mediated by a Thiol Ligation Auxiliary2005

    • Author(s)
      K.Kawakami
    • Journal Title

      Tetrahedron Lett. 46

      Pages: 8805-8807

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Synthesis of an olefin-containing cyclic peptide using the solid-phase Honer-Emmons reaction2004

    • Author(s)
      J.K.Bang
    • Journal Title

      Tetrahedron Lett. 45

      Pages: 99-102

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Synthesis of the C-terminal Region of Opioid Receptor Like 1 in an SDS Micelle by the Native Chemical Ligation Effect of Thiol Additive and SDS Concentration on Ligation Efficiency2004

    • Author(s)
      T.Sato
    • Journal Title

      J.Peptide Sci.,Epub. Dec.

      Pages: 20-20

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A photoremovable ligation auxiliary for use in polypeptide synthesis2003

    • Author(s)
      Toru Kawakami
    • Journal Title

      Tetrahedron Lett. 44

      Pages: 6059-6061

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Use of thiosulfonate for the protection of thiol groups in peptide ligation by the thioester method2003

    • Author(s)
      Takeshi Sato
    • Journal Title

      Tetrahedron Lett. 44

      Pages: 8085-8087

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Synthesis of a membrane protein with two transmembrane regions2002

    • Author(s)
      T.Sato
    • Journal Title

      J.Pept.Sci. 8

      Pages: 172-180

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Implications of threonine hydrogen bonding in the glycophorin A transmembrane helix dimer2002

    • Author(s)
      S.O.Smith
    • Journal Title

      Biophys.J 82

      Pages: 2476-2486

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Transmembrane interactions in the activation of the Neu receptor tyrosine Kinase2002

    • Author(s)
      S.O.Smith
    • Journal Title

      Biochemistry 41

      Pages: 9321-9332

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Implications of threonine hydrogen bonding in the glycophorin A transmembrane helix dimer2002

    • Author(s)
      S.O.Smith
    • Journal Title

      Biophys.J. 82

      Pages: 2476-2486

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Transmembrane interactions in the activation of the Neu receptor tyrosine kinase2002

    • Author(s)
      S.O.Smith
    • Journal Title

      Biochemistry 41

      Pages: 9321-9332

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Solid-Phase Staudinger Ligation on a Novel Core-Shell Type Resin

    • Author(s)
      H.Kim
    • Journal Title

      Organic Lett. (In press)

    • Related Report
      2005 Annual Research Report
  • [Publications] T.Kawakami, S.Aimoto: "A photoremovable ligation auxiliary for use in polypeptide synthesis"Tetrahedron Letters. 44・32. 6059-6061 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Sato, S.Aimoto: "Use of thiosulfonate for the protection of thiol groups in peptide ligation by the thioester method"Tetrahedron Letters. 44・44. 8085-8087 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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