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Interaction between two motor domains of cytoplasmic dynein stepping along microtubules revealed by cryo-electron microscopy.

Research Project

Project/Area Number 16K07327
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biophysics
Research InstitutionOsaka University (2017-2019)
Chuo University (2016)

Principal Investigator

IMAI Hiroshi  大阪大学, 理学研究科, 助教 (60391869)

Project Period (FY) 2016-04-01 – 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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords分子モーター / 細胞骨格 / クライオ電子顕微鏡 / ナノマシーン / ダイニン / 微小管 / モータータンパク質 / クライオ子線トモグラフィ / 構造生物学 / ナノバイオ / 生物物理 / 電子顕微鏡 / 脳神経疾患 / 癌
Outline of Final Research Achievements

The goal of this project is to understand structure and function of cytoplasmic dynein, which steps along microtubules. In eukaryotic cells, cytoplasmic dynein transports varieties of intracellular cargoes such as mitochondria, mRNA, growth factors from cell periphery to cell center. We obtained new cryo-EM images of cytoplasmic dynein stepping along microtubules in the presence of ATP. In addition, we obtained new structure of cytoplasmic dynein, which detached from microtubules in the presence of ATP. These results would provide the structural basis of understanding of function of cytoplasmic dynein in the eukaryotic cells.

Academic Significance and Societal Importance of the Research Achievements

これまでに報告されている多くの先行研究では、ヌクレオチドを、例えばADPなど1つに固定して、構造解析をしていた。本研究では、生理学的に最も意義のあるATPの加水分解サイクルが回っている状態で、微小管上を歩行している細胞質ダイニンの構造を、クライオ電子顕微鏡を用いて調べた点で、生理学的に重要な研究である。また、微小管から解離した細胞質ダイニンの構造も解析し、新たな知見を得た。細胞質ダイニンの機能にわずかにでも障害が生じると、神経変性疾患や脳の発達障害などの疾病が生じることが示唆されている。そのため、本研究で得られた知見は、これらの疾病の発症の分子メカニズムを理解する上で役立つと考えられる。

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

    (26 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Open Access: 2 results,  Peer Reviewed: 1 results) Presentation (14 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Book (1 results) Remarks (4 results)

  • [Int'l Joint Research] Universite Paris-Saclay/Universite de Paris(フランス)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] University of London(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Paul Scherrer Institute(スイス)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] University of London/University of Leeds(英国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] GTP-dependent formation of straight oligomers leads to nucleation of microtubules2020

    • Author(s)
      Ayukawa Rie、Iwata Seigo、Imai Hiroshi、Kamimura Shinji、Hayashi Masahito、Ngo Kien Xuan、Minoura Itsushi、Uchimura Seiichi、Makino Tsukasa、Shirouzu Mikako、Shigematsu Hideki、Sekimoto Ken、Gigant Benoit、Muto Etsuko
    • Journal Title

      bioRxiv

      Volume: -

    • DOI

      10.1101/2020.03.05.979989

    • Related Report
      2019 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Development of phase-contrast/dark-field microscopy with scanning laser illumination2019

    • Author(s)
      Tsuyoshi Sato, Tomotaka Shirane, Yuuko Wada, Hiroshi Imai, Shinji Kamimura
    • Journal Title

      Journal of the Institute of Science and Engineering, Chuo University

      Volume: 25 Pages: 93-103

    • NAID

      120006870443

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 動物細胞に共通する細胞内の輸送システム2018

    • Author(s)
      今井洋,昆隆英
    • Journal Title

      生産と技術

      Volume: 70 Pages: 73-76

    • NAID

      40021703280

    • Related Report
      2018 Research-status Report
  • [Presentation] A newly developed negative stain EM method for protein complexes at high protein concentration. 新規に開発した高濃度タンパク質のためのネガティブ染色電子顕微鏡法2019

    • Author(s)
      Hiroshi Imai, Takayuki Kato, Gerle Christoph, Etsuko Muto, Kaoru Mitsuoka, Genji Kurisu, Keiichi Namba Takahide Kon
    • Organizer
      日本生物物理学会第57回年会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Structural/functional analysis on MOT7, a novel light chain of ciliary dynein f/I1. 新規繊毛ダイニン軽鎖MOT7の構造機能解析2019

    • Author(s)
      Ryosuke Yamamoto, Yuuhei Nakagiri, Osamu Kutomi, Hiroshi Imai, Chihong Song, Kazuyoshi Murata, Ken-ichi Wakabayashi, Takashi Ishikawa, Kazuo Inaba, Takahide Kon
    • Organizer
      日本生物物理学会第57回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Cryo-electron tomography revealed localization of a novel ciliary dynein subunit, MOT7. クライオ電子線トモグラフィー法による新規に発見された繊毛ダイニンのサブ ユニットMOT7の局在決定2019

    • Author(s)
      Ryosuke Yamamoto, Yuuhei Nakagiri, Osamu Kutomi, Hiroshi Imai, Chihong Song, Kazuyoshi Murata, Ken-ichi Wakabayashi, Takashi Ishikawa, Kazuo Inaba, Takahide Kon
    • Organizer
      NIPS EM Workshop 2019 生理研研究会.
    • Related Report
      2019 Annual Research Report
  • [Presentation] Dynamic changes of tubulin dimer configurations on a scale of sub-second revealed by high flux X-ray fiber diffraction2019

    • Author(s)
      Shinji Kamimura, Hiroshi Imai, Toshiki Yagi, Hiroyuki Iwamoto
    • Organizer
      日本生物物理学会第57回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 高タンパク質濃度条件下のタンパク質複合体の構造を観察するための新規のネガティブ染色電子顕微鏡法2019

    • Author(s)
      今井洋,中桐 侑平,Gerle,C,武藤悦子,栗栖源嗣,昆隆英
    • Organizer
      2019年生体運動合同班会議
    • Related Report
      2018 Research-status Report
  • [Presentation] 微小管のX線繊維回折:チューブリン格子ラセン角の計測2019

    • Author(s)
      上村慎治, 今井洋, 八木俊樹, 岩本裕之, Estevez-Galego, J., Lucena-Agell, D., Diaz, J.-F. & Hermida-Merino, D.
    • Organizer
      2019年生体運動合同班会議
    • Related Report
      2018 Research-status Report
  • [Presentation] 微小管内のチューブリン分子の安定性・可塑性・柔軟性を目安にした微細動態解析2019

    • Author(s)
      上村慎治、今井洋、八木俊樹、岩本裕之
    • Organizer
      日本動物学会・関東支部 第71回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] ラフィド藻シャトネラの遊泳停止と赤潮発生機構2019

    • Author(s)
      中原美奈、成田大樹、和田祐子、鈴木雄大、田中昂輝、今井洋、上村慎治
    • Organizer
      日本動物学会・関東支部 第71回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] シャトネラ鞭毛停止運動と赤潮発生機構2019

    • Author(s)
      成田大樹、和田祐子、中原美奈、鈴木雄大、田中昴輝、今井洋、上村慎治
    • Organizer
      第39回エアロ・アクアバイオメカニズム学会
    • Related Report
      2018 Research-status Report
  • [Presentation] Novel intermediate structures of cytoplasmic dynein between shutdown and active states.2018

    • Author(s)
      T. Shioi, A. Fukunaga, R. Shimo, R. Yamamoto, H. Imai, and T. Kon.
    • Organizer
      日本生物物理学会 第56回年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Cryo-EM observation of stepping patterns of cytoplasmic dynein on microtubules with new freezing conditions.2018

    • Author(s)
      R. Kanazawa, H. Imai, T. Shioi, R. Shimo, R. Yamamoto, K. Mitsuoka, and T. Kon.
    • Organizer
      日本生物物理学会 第56回年会
    • Related Report
      2018 Research-status Report
  • [Presentation] A new negative staining EM method at high protein concentration for sample evaluation of cryo-EM single particle analysis.2018

    • Author(s)
      H. Imai, E. Muto, T. Kon.
    • Organizer
      生理研究会
    • Related Report
      2018 Research-status Report
  • [Presentation] 細胞内輸送の動力源の一つ・蛋白質「ダイニン」の不活性化状態と活性化状態の構造解析2018

    • Author(s)
      今井洋
    • Organizer
      大阪大学超高圧電子顕微鏡センター医学・生物系共同利用研究報告会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] How does cytoplasmic dynein stepping along microtubules look like?2017

    • Author(s)
      Hiroshi Imai and Takahide Kon
    • Organizer
      Dynein 2017 International Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] Handbook of Dynein (Second Edition)2019

    • Author(s)
      Roberts, A., Toropova, K, and Imai, H. (Editor Hirose, K.)
    • Total Pages
      32
    • Publisher
      Jenny Stanford Publishing
    • ISBN
      9814800015
    • Related Report
      2019 Annual Research Report
  • [Remarks] 大阪大学大学院理学研究科 生物科学専攻 細胞構築学・昆研究室

    • URL

      http://www.bio.sci.osaka-u.ac.jp/bio_web/lab_page/kon/

    • Related Report
      2018 Research-status Report
  • [Remarks] 細胞内を移動するタンパク質「ダイニン」が動いているときの構造が見えた! (大阪大学プレスリリース)

    • URL

      https://www.sci.osaka-u.ac.jp/ja/topics/4200/

    • Related Report
      2018 Research-status Report
  • [Remarks] 細胞内を移動するタンパク質「ダイニン」が 動いているときの構造が見えた! (中央大学プレスリリース)

    • URL

      https://www.chuo-u.ac.jp/research/institutes/science/news/2015/09/20982/?r=1

    • Related Report
      2018 Research-status Report
  • [Remarks] 細胞内の宅配便「ダイニン」の動きが見えた!

    • URL

      https://scienceportal.jst.go.jp/clip/20160122_01.html

    • Related Report
      2018 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2021-02-19  

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