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Motile mechanism of axonemal dynein studied using the dynein-microtubule-DNA-origami complex

Research Project

Project/Area Number 16K07332
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biophysics
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Hirose Keiko  国立研究開発法人産業技術総合研究所, 生命工学領域, 主任研究員 (90357872)

Project Period (FY) 2016-10-21 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsダイニン / 微小管 / 鞭毛・繊毛 / DNA折り紙 / ナノ計測 / 分子モーター / 電子顕微鏡 / 光ピンセット / 生物物理 / 鞭毛繊毛
Outline of Final Research Achievements

In order to understand the regulatory mechanism of the periodic bending movement of cilia and flagella, we constructed a model system consisting of axonemal outer arm dyneins, microtubules, and DNA origami structures. Electron microscopic observation revealed that the complex has a structure in which dyneins are regularly arranged in two opposite orientations between two microtubules crosslinked by DNA origami. In optical trapping experiments, the complex showed back and forth movement. These results showed that a simple system composed of dynein, microtubules, and crosslinkers has an ability to move in a self-oscillatory manner.

Academic Significance and Societal Importance of the Research Achievements

鞭毛・繊毛の周期的屈曲運動のためには、鞭毛・繊毛軸糸の逆側に配置したダイニンが交互に活性化する必要があるが、これがダイニン・微小管に固有の性質によるのか、鞭毛内に多数存在する他の制御蛋白質や鞭毛・繊毛の特徴的な立体構造によるのかは不明であった。本研究では、DNA折り紙構造体を用いることにより、軸糸ダイニン、微小管、架橋構造から成る単純な系が自律振動的に運動することを示し、鞭毛・繊毛運動の制御機構を理解するうえで重要な知見を得ることができた。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2020 2019 2018 2017

All Presentation (5 results) (of which Int'l Joint Research: 3 results)

  • [Presentation] Oscillatory movement of a dynein-microtubule complex crosslinked with DNA-origami2020

    • Author(s)
      Shimaa A. Abdellatef, Hisashi Tadakuma, Yuichi Kondo, Kangmin Yan, Rofia Boudria, Kodai Fukumoto, Takashi Fujiwara, Hideo Higuchi, and Keiko Hirose
    • Organizer
      Annual Meeting of the Biophysical Society, US
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oscillatory movement of the dynein-microtubule complex crosslinked with DNA-origami2019

    • Author(s)
      Shimaa A. Abdellatef , Hisashi Tadakuma, Yuichi Kondo, Kangmin Yan, Hideo Higuchi, and Keiko Hirose
    • Organizer
      日本生物物理学会第57回年会
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Motility and structure of the dynein-microtubule complex crosslinked with DNA-origami2018

    • Author(s)
      Shimaa A. Abdellatef、多田隈尚史、近藤雄一、厳康敏、樋口秀男、広瀬恵子
    • Organizer
      日 本生物物理学会第56回年会
    • Related Report
      2018 Research-status Report
  • [Presentation] ダイニン・微小管複合体のDNA折り紙をもちいた架橋2017

    • Author(s)
      広瀬恵子, Rofia Boudria, 厳康敏, 近藤雄一, 樋口秀男, 多田隈尚史
    • Organizer
      生体運動合同班会議
    • Place of Presentation
      神戸国際会議場(神戸市)
    • Year and Date
      2017-01-07
    • Related Report
      2016 Research-status Report
  • [Presentation] Analysis of the dynein-microtubule complex cross-bridged with DNA2017

    • Author(s)
      Keiko Hirose, Rofia Boudria, Shimaa Abdelaleem, Yuichi Kondo, Kangmin Yan, Hideo Higuchi, Hisashi Tadakuma
    • Organizer
      International Workshop Dynein 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-10-24   Modified: 2021-02-19  

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