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Drug design based on the three-dimensional structure of collagen-binding domain, and its application

Research Project

Project/Area Number 12670258
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Bacteriology (including Mycology)
Research InstitutionKagawa Medical School

Principal Investigator

MATSUSHITA Osamu  Kagawa Medical University, Microbiology, assistant Professor, 医学部, 助教授 (00209537)

Co-Investigator(Kenkyū-buntansha) NISHI Nozomu  Kagawa Medical University, Endocrinology, research associate, 医学部, 助手 (10145047)
片山 誠一  香川医科大学, 医学部, 助手 (70169473)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2001: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2000: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsClostridium / collagenase / collagen-binding domain / beta-sandwitch / collagenous peptide
Research Abstract

Tandem collagen-binding domains (CBD's) are present at the C-terminus of Clostridium histicum class I collagenase. Three-dimesional structure of the domain was determined in the presence and abscence of Ca^<2+> ion. Addition of the ion altered conformation of the N-terminal linker peptide from an alpha-helix to beta-sheets, which stabilizes the beta-sandwich domain structure and increases the substrate affinity. (Joint project with Dr. Joshua Sakon et al. University of Arkansas, U. S. A.) in order to investigate the mode of substrate binding, mutated CBD's were constructed, where various surface-oriented amino acid residues are altered. By surface plasmon resonance using a sensor chip with an immobilized collagenous peptide, G(POG)_8, we determined their binding constants against this artificial substrate. This expriment showed that a hydrophobic surface of the sandwitch plays a key role for the substrate binding.
Binding of CBD against various types of collagen was studied by immunohistochemistry. Light and electron microscopic observation was performed after allowing CBD to bind to prefixed collagen-rich tissues, i.e. kidney, cartilage and aorta. CBD bound to all these tissues, but with no periodicity. CBD also bound to various types of collagen in vitro. These results suggested that CBD recognizes its triple helical confomation.
We purified collagenases from three gelatinolytic Clostridia, and cloned their structural genes. Comparison of the deduced sequences revealed that they possess unique segmental structure. We could observe the dynamic rearrangements of the enzyme strucure by comparing the primary sequence of various enzymes.

Report

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

    (10 results)

All Other

All Publications (10 results)

  • [Publications] Osamu Matsushita: "Substrate recognition by the collagen-binding domain of Clostridium histolyticum class I collagenase"The Journal of Biological Chemistry. 276. 8761-8770 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tetsuhiko Toyoshima: "Collagen-binding domain of a Clostridium histolyticum collagenase exhibits a broad substrate spectrum both in vitro and in vivo"Connective Tissue Research. 42. 281-290 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Osamu Matsushita: "Clostridial hydrolytic enzymes degrading extracellular components"Toxicon. 39. 1769-1780 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Osamu Matsushita: "Substrate recognition by the collagen-binding domain of Clostridium histolyticum class I collagenase"The Journal of Biological Chemistry. 276 (12). 8761-8770 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Tetsuhiko Toyoshima: "Collagen-binding domain of a Clostridium histolyticum collagenase exhibits a broad substrate spectrum both in vitro and in vivo"Connective Tissue Research. 42 (4). 281-290 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Osamu Matsushita: "Clostridial hydrolytic enzymes derading extracellular components"Toxicon. 39. 1769-1780 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Osamu Matsushita: "Substrate recognition by the collagen-binding domain of Clostridium histolyticum class I collagenase"The Journal of Biological Chemistry. 276・12. 8761-8770 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Tetsuhiko Toyoshima: "Collagen-binding domain of a Clostridium histolyticum collagenase exhibits a broad substrate spectrum both in vitro and in vivo"Connective Tissue Research. 42・4. 281-290 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Osamu Matsushita: "Clostridial hydrolytic enzymes degrading extracellular components"Toxicon. 39. 1769-1780 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Matsushita,O.: "Substrate recognition by the collagen-binding domain of Clostridium histolyticum class I collagenase"Journal of Biological Chemistry. 276(in press). (2001)

    • Related Report
      2000 Annual Research Report

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

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