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Video-imaging of amyloid disaggregase, Hsp104, on amyloid fibrils

Research Project

Project/Area Number 16K18524
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Biophysics
Research InstitutionKanazawa University

Principal Investigator

Nakayama Takahiro  金沢大学, ナノ生命科学研究所, 准教授 (00532821)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywordsアミロイドタンパク / 原子間力顕微鏡 / アミロイド / 高速原子間力顕微鏡ビルトイン用インキュベータ / アミロイド線維立体構造 / Hsp104立体構造動態のヌクレオチド依存性 / 分子シャペロン / 高速原子間力顕微鏡 / 一分子観察 / 生物物理 / 走査プローブ顕微鏡 / 生体分子 / 脳・神経
Outline of Final Research Achievements

Yeast Hsp104 has been known to be the disaggregase which disaggregates various insoluble amyloid fibrils with different fibril structures. The mechanism of this diverse substrate specificity, however, has been unclarified. In this study, we tried to observe structural dynamics of individual Hsp104 and amyloid fibrils on amyloid disaggregase reaction, using high-speed atomic force microscopy (HS-AFM). We observed structural dynamics of amyloidogenic protein X aggregation into fibrils while we have not been able to characterize the disaggregation events on HS-AFM movies.

Academic Significance and Societal Importance of the Research Achievements

アミロイドタンパクX凝集過程の構造動態に関する知見は、アミロイド病Xは勿論のこと、別のアミロイド病研究にもインパクトが大きい。異なるアミロイド病は、原因タンパクの一次構造も異なるが、アミロイド線維への凝集過程は共有するメカニズムが多いためである。本研究で確立したアミロイドタンパクXの構造動態観察方法は、凝集阻害作用のあるとされる薬剤が凝集のどの反応過程を阻害するか検証することに利用できる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Visualization of Protein Assembly Dynamics by Using High-speed Atomic Force Microscopy2018

    • Author(s)
      中山隆宏、紺野宏記、山田正仁、小野賢二郎
    • Journal Title

      Seibutsu Butsuri

      Volume: 58 Issue: 2 Pages: 086-088

    • DOI

      10.2142/biophys.58.086

    • NAID

      130006594328

    • ISSN
      0582-4052, 1347-4219
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Nanometer resolution video imaging reveals structural dynamics of single amyloidogenic protein assemblies2017

    • Author(s)
      Takahiro Watanabe-Nakayama
    • Organizer
      The 5th Asia Pacific Protein Association Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Nano-Space Video Imaging Reveals Structural Dynamics of FibrousProtein Assembly and Relevant Enzymes2017

    • Author(s)
      Takahiro Watanabe-Nakayama, Noriyuki Kodera, Hiroki Konno, Kenjiro Ono, David B. Teplow, Masahito Yamada, Toshio Ando
    • Organizer
      Biophysical Society | 61 st Annual Meeting
    • Place of Presentation
      ニューオリンズ(米国)
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2024-01-30  

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