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Dynamic changes of tubulin dimer configuration on a scale of sub-second revealed by high-flux X-ray fiber diffraction analysis

Research Project

Project/Area Number 16K07328
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biophysics
Research InstitutionChuo University

Principal Investigator

Kamimura Shinji  中央大学, 理工学部, 教授 (90177585)

Co-Investigator(Kenkyū-buntansha) 箕浦 高子  中央大学, 理工学部, 准教授 (80300721)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
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)
KeywordsX線繊維回折 / 流動配向法 / 高速構造変化追跡 / 微小管安定化剤 / 抗がん剤候補 / 構造安定性 / タキソール / ラウリマライド / X線繊維回折 / チューブリン分子構造 / 時間分解能 / パクリタクセル / 高時間分解能 / 微小管構造変化 / 細胞骨格 / 微小管 / 流動配向
Outline of Final Research Achievements

Microtubules are assembled from tubulin dimers that are arranged in a semi-crystal lattice with high regularity. Dynamics of tubulin dimer within microtubules is thus expected to be directly affecting the stability of microtubules, however, it has been difficult to quantitatively describe such properties. By analyzing the time course of pattern changes in X-ray fiber diffractions from aligned microtubules with a high-flux synchrotron beam of BL40XU (SPring-8), we found microtubules showed rapid elongation in the axial tubulin repeat and the concomitant increase of structural flexibility with a time constant of about 0.2 s after applying paclitaxel, microtubule-stabilizer. Contrasting effects were found for laulimalide, another type of microtubules stabilizer.

Academic Significance and Societal Importance of the Research Achievements

従来は、電子顕微鏡でしか、微小管構造変化を追跡することしかできなかった。例えば、クライオ電顕で秒単位の変化を調べることで、タキソールの効果が30秒ほどの時間経過で現れること、それが主にプロトフィラメント数の減少で説明できることなどがわかっていただけである。X線繊維回折法の特徴は、凍結したり化学固定することなく、溶液中での構造変化を、サブ秒単位の高速で追跡できる点である。その実例を微小管の4 nm周期変化やゆらぎ幅の増減として捉えることに世界で初めて成功した。生体試料の流動配向法、繊維回折法、薬理効果の現れる速度を記述する新手法としての展開が今後期待できる。

Report

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

    (21 results)

All 2018 2017 2016 Other

All Int'l Joint Research (4 results) Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 2 results) Remarks (5 results)

  • [Int'l Joint Research] Dutch-Belgian Beamline - ESRF/Observatoire Oceanologique(NEDERLANDS/BELGIUM)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Institut Laue-Langevin (ILL)(FRANCE)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Centro Invest Biol - CIB(SPAIN)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Institut Laue-Langevin (ILL)/Dutch-Belgian Beamline - ESRF(France)

    • Related Report
      2016 Research-status Report
  • [Journal Article] Kinesin-binding-triggered conformation switching of microtubules contributes to polarized transport2018

    • Author(s)
      Shima Tomohiro、Morikawa Manatsu、Kaneshiro Junichi、Kambara Taketoshi、Kamimura Shinji、Yagi Toshiki、Iwamoto Hiroyuki、Uemura Sotaro、Shigematsu Hideki、Shirouzu Mikako、Ichimura Taro、Watanabe Tomonobu M.、Nitta Ryo、Okada Yasushi、Hirokawa Nobutaka
    • Journal Title

      The Journal of Cell Biology

      Volume: 217 Issue: 12 Pages: 4164-4183

    • DOI

      10.1083/jcb.201711178

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] X-ray fiber diffraction: a tool for understanding the structural dynamics of tubulin dimers in native microtubules.2017

    • Author(s)
      Kamimura S
    • Journal Title

      SPring-8/SACLA Research Frontiers 2016

      Volume: 2016 Pages: 32-33

    • Related Report
      2017 Research-status Report
  • [Journal Article] Simulation of intra-ciliary diffusion suggests a novel role of primary cilia as a cell-signaling enhancer2017

    • Author(s)
      Takao Daisuke and Kamimura Shinji
    • Journal Title

      Development, Growth & Differentiation

      Volume: 59 Issue: 5 Pages: 415-422

    • DOI

      10.1111/dgd.12360

    • Related Report
      2016 Research-status Report
    • Open Access
  • [Presentation] Biochemical and structural characterization of taxol microtubule-stabilizing agents.2018

    • Author(s)
      Estevez-Galego J, Kamimura S, Balaguer-Perez, Lucena-Agell D & Diaz, J-F
    • Organizer
      EBMO Symposium.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamic changes of tubulin dimer configurations on a scale of sub-second revealed by high flux X-ray fiber diffraction2018

    • Author(s)
      Shinji Kamimura, Hiroshi Imai, Toshiki Yagi and Hiroyuki Iwamoto
    • Organizer
      EBMO Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct flow analysis around the beating flagella of sea-urchin sperm cells2017

    • Author(s)
      Kawasaki T, Imai H, Kamimura S
    • Organizer
      日本動物学会 年次大会(第88回) 2017/9/21-23 Toyama
    • Related Report
      2017 Research-status Report
  • [Presentation] “Double wave” of Octopus sperm flagella under high viscous condition2017

    • Author(s)
      Wada Yuuko Wada, Mogami Yoshihiro and Kamimura Shinji
    • Organizer
      日本動物学会 年次大会(第88回) 2017/9/21-23 Toyama
    • Related Report
      2017 Research-status Report
  • [Presentation] Conformational switching of microtubule and cooperative binding of kinesin‐1 as a base for polarized transport2017

    • Author(s)
      Shima T, Morikawa M, Kaneshiro J, Kambara T, Kamimura S, Yagi T, Iwamoto H, Uemura S, Shigematsu H, Ichimura T, Watanabe TM, Nitta R, Okada Y & Hirokawa N
    • Organizer
      ASCB(米国細胞生物学会) 2017/12/2-6 Philadelphia USA
    • Related Report
      2017 Research-status Report
  • [Presentation] Determination of accurate axial tubulin repeat in GDP-microtubules.2016

    • Author(s)
      Kamimura S, Imai H, Yagi T, Shima T, Okada Y, Iwamoto H
    • Organizer
      54th Meeting of the Biophysical Society of Japan
    • Place of Presentation
      Tsukuba
    • Year and Date
      2016-11-25
    • Related Report
      2016 Research-status Report
  • [Presentation] New features of the structural dynamics of native microtubules revealed X-ray fiber diffraction2016

    • Author(s)
      Kamimura Shinji
    • Organizer
      22nd International Congress of Zoology (ICZ) & the 87th meeting of the Zoological Society of Japan
    • Place of Presentation
      Okinawa
    • Year and Date
      2016-11-18
    • Related Report
      2016 Research-status Report
  • [Presentation] Direct flow analysis around the beating flagella of sea-urchin sperm cells supporting the slender body theory of micro-swimmers2016

    • Author(s)
      Miyashiro Daisuke and Kamimura Shinji
    • Organizer
      31st International Congress on High-speed Imaging and Photonics
    • Place of Presentation
      Oosaka
    • Year and Date
      2016-11-07
    • Related Report
      2016 Research-status Report
  • [Presentation] 54th Meeting of the Biophysical Society of Japan2016

    • Author(s)
      S. Kamimura, Y. Fujita, Y. Wada, T. Yagi, T. Shima, Y. Okada, H. Iwamoto
    • Organizer
      2016 EMBL Symposia Microtubules, Microtubules: From Atoms to Complex Systems
    • Place of Presentation
      Heidelberg
    • Year and Date
      2016-05-27
    • Related Report
      2016 Research-status Report
  • [Remarks] Microbiomechanics Lab

    • URL

      http://www.bio.chuo-u.ac.jp/nano/

    • Related Report
      2017 Research-status Report
  • [Remarks] 研究者情報データベース(中央大学)

    • URL

      https://ir.c.chuo-u.ac.jp/researcher/profile/00010255.html

    • Related Report
      2017 Research-status Report
  • [Remarks] ACADEMIC RESERCHER DATABASE(Chuo University)

    • URL

      https://ir.c.chuo-u.ac.jp/researcher/profile/00010255.html?lang=en

    • Related Report
      2017 Research-status Report
  • [Remarks] Cytoskeleton誌案内

    • URL

      http://onlinelibrary.wiley.com/doi/10.1002/cm.21283/abstract

    • Related Report
      2016 Research-status Report
  • [Remarks] SPring-8/SACLA Research Frontiers

    • URL

      http://www.spring8.or.jp/en/news_publications/publications/research_frontiers/

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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