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Detection of the physical interaction between rotor and stator essential for torque generation in the bacterial flagellar motor

Research Project

Project/Area Number 18K19293
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 43:Biology at molecular to cellular levels, and related fields
Research InstitutionNagoya University

Principal Investigator

Kojima Seiji  名古屋大学, 理学研究科, 准教授 (70420362)

Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords細菌べん毛モーター / 回転子 / 固定子 / 部位特異的光架橋 / MotA / PomA / FliG / FRET
Outline of Final Research Achievements

Bacterial flagellar motor is a rotary nanomachine driven by the ion-motive force across the cytoplasmic membrane. Rotational force is generated by the rotor-stator interaction that couples to ion conduction through the stator complex. Since the rotor-stator interaction occurs very transient and rapidly, it was not detected physically or biochemically in protein level. Here we employed the in vivo photo-crosslink method to capture this rapid interaction. In this approach, the photo-reactive but non-natural amino acid (pBPA) was site-directly incorporated into the rotor or stator protein respectively (FliG or MotA/PomA) in Eschericha coli cell. After the UV flash irradiation to the cell, the photo-crosslinked protein was detected by the SDS-PAGE followed by the immunoblotting. Using this method, we could detect for the first time FliG-MotA or FliG-PomA interactions between the residues reported genetically for the electrostatic interactions.

Academic Significance and Societal Importance of the Research Achievements

細菌べん毛モーターの回転機構を理解するためには、回転力発生の核となる回転子-固定子間相互作用の実態を明らかにする必要がある。しかし高速回転するモーターにおいて短時間かつ連続的に生じるこの相互作用は、これまでタンパク質レベルで検出されていなかった。本研究では光を用いて瞬時に相互作用を捉える光架橋法を用いて、初めて固定子と回転子間のタンパク質間相互作用を検出することに成功した。本研究で見出した相互作用残基は、遺伝学的解析で同定されていた静電相互作用に関与する残基であり、今後、最近得られた固定子と回転子タンパク質の立体構造情報と合わせた解析により、相互作用界面の実態を明らかにすることが期待できる。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (22 results)

All 2020 2019 2018

All Journal Article (8 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (14 results)

  • [Journal Article] Characterization of FliL proteins in Bradyrhizobium diazoefficiens: lateral FliL supports swimming motility, and subpolar FliL modulates the lateral flagella system.2020

    • Author(s)
      Mengucci F, Dardis C, Mongiardini EJ, Althabegoiti MJ, Partridge JD, Kojima S, Homma M, Quelas JI, Lodeiro AR.
    • Journal Title

      Journal of Bacteriology

      Volume: 202 Issue: 5

    • DOI

      10.1128/jb.00708-19

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of sodium ions on conformations of the cytoplasmic loop of the PomA stator protein of Vibrio alginolyticus2019

    • Author(s)
      Mino Taira、Nishikino Tatsuro、Iwatsuki Hiroto、Kojima Seiji、Homma Michio
    • Journal Title

      The Journal of Biochemistry

      Volume: 166 Issue: 4 Pages: 331-341

    • DOI

      10.1093/jb/mvz040

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Characterization of PomA periplasmic loop and sodium ion entering in stator complex of sodium-driven flagellar motor2019

    • Author(s)
      Nishikino Tatsuro、Iwatsuki Hiroto、Mino Taira、Kojima Seiji、Homma Michio
    • Journal Title

      The Journal of Biochemistry

      Volume: 167 Issue: 4 Pages: 389-398

    • DOI

      10.1093/jb/mvz102

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure of Vibrio FliL, a New Stomatin-like Protein That Assists the Bacterial Flagellar Motor Function2019

    • Author(s)
      Norihiro Takekawa, Miyu Isumi, Hiroyuki Terashima, Shiwei Zhu, Yuuki Nishino, Mayuko Sakuma, Seiji Kojima, Michio Homma, Katsumi Imada
    • Journal Title

      mBio

      Volume: 10(2) Issue: 2

    • DOI

      10.1128/mbio.00292-19

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of PlzD, a YcgR homolog of c-di-GMP binding protein, on polar flagellar motility in Vibrio alginolyticus.2019

    • Author(s)
      Kojima S, Yoneda T, Morimoto W, Homma M.
    • Journal Title

      Journal of Biochemistry

      Volume: 印刷中 Issue: 1 Pages: 77-88

    • DOI

      10.1093/jb/mvz014

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] FliL association with flagellar stator in the sodium-driven Vibrio motor characterized by the fluorescent microscopy.2018

    • Author(s)
      Lin TS, Zhu S, Kojima S, Homma M, Lo CJ.
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1

    • DOI

      10.1038/s41598-018-29447-x

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Vibrio H-ring facilitates the outer membrane penetration of polar-sheathed flagellum.2018

    • Author(s)
      Zhu S, Nishikino T, Kojima S, Homma M, Liu J.
    • Journal Title

      Journal of Bacteriology

      Volume: 200 Issue: 21

    • DOI

      10.1128/jb.00387-18

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Rotational direction of flagellar motor from the conformation of FliG middle domain in marine Vibrio.2018

    • Author(s)
      Nishikino T, Hijikata A, Miyanoiri Y, Onoue Y, Kojima S, Shirai T, Homma M.
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 17793-17793

    • DOI

      10.1038/s41598-018-35902-6

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 海洋性ビブリオ菌固定子複合体の Na+イオン透過におけるPomAとPomBの相互作用の変化の役割2019

    • Author(s)
      錦野達郎、岩月啓人、小嶋誠司、本間道夫
    • Organizer
      第83回日本生化学学会中部支部会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 海洋性ビブリオ菌べん毛固定子タンパク質PomAの細胞質領域へのPro変異導入による機能解析2019

    • Author(s)
      相良悠伍、小嶋誠司、本間道夫
    • Organizer
      第83回日本生化学学会中部支部会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Interaction between the rotor protein FliG and the stator protein PomA in cells detected by in vivo photo-crosslink2019

    • Author(s)
      Seiji Kojima, Hiroyuki Terashima, Michio Homma
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Destabilization of the complex formation allows high Na+ conduction in the PomAB flagellar stator complex2019

    • Author(s)
      Tatsuro Nishikino, Hiroto Iwatsuki, Mino Taira, Seiji Kojima, Michio Homma
    • Organizer
      第57回日本生物物理学会年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 海洋性ビブリオ菌べん毛固定子タンパク質PomAの細胞質領域へのPro変異導入による構造と機能の解析2019

    • Author(s)
      相良悠伍、 小嶋誠司、本間道夫
    • Organizer
      第45回日本生体エネルギー研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 細菌べん毛モーター固定子タンパク質PomA細胞質領域のCys変異体を用いたイオン依存的構造動態解析2019

    • Author(s)
      三野平、錦野達郎、岩月啓人、小嶋誠司、本間道夫
    • Organizer
      2018年度べん毛研究交流会
    • Related Report
      2018 Research-status Report
  • [Presentation] プラグを欠失した海洋性ビブリオ菌固定子PomAB複合体の精製条件の検討と解析2019

    • Author(s)
      錦野達郎、岩月啓人、三野平、小嶋誠司、本間道夫
    • Organizer
      平成30年度生物物理学会中部支部講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 海洋性ビブリオ菌べん毛モータ回転方向制御における FliG Gly-Gly flexible linkerの役割2018

    • Author(s)
      錦野 達郎、宮ノ入 洋平、小嶋 誠司、本間 道夫
    • Organizer
      第82回日本生化学学会中部支部会
    • Related Report
      2018 Research-status Report
  • [Presentation] 海洋性ビブリオ菌べん毛モーター固定子PomAタンパク質のCys変異導入を用いた細胞質領域荷電残基の構造解析2018

    • Author(s)
      三野平、錦野達郎、岩月啓人、小嶋誠司、本間道夫
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Structural and functional characterization of periplasmic loop regions of PomA, a stator protein of flagellar motor, in sodium ion flux.2018

    • Author(s)
      岩月 啓人、岩城 雅代、寺島 浩行、小嶋 誠司、神取 秀樹、本間 道夫
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Mutational and structural analysis of the FliG middle domain for the rotational direction of polar flagellar motor of Vibrio2018

    • Author(s)
      Tatsuro NISHIKINO、Atsushi HIJIKATA、Yohei MIYANOIRI、Yasuhiro ONOUE、 Seiji KOJIMA、Tsuyoshi SHIRAI、Michio HOMMA
    • Organizer
      第79回岡崎コンファレンス
    • Related Report
      2018 Research-status Report
  • [Presentation] Helix rearrangement in the periplasmic domain of the stator B-subunit in the bacterial flagellar motor activates peptidoglycan binding and ion influx2018

    • Author(s)
      Seiji KOJIMA,Masato TAKAO,Gaby ALMIRA,Ikumi KAWAHARA,Mayuko SAKUMA,Michio HOMMA,Chojiro KOJIMA,and Katsumi IMADA
    • Organizer
      第79回岡崎コンファレンス
    • Related Report
      2018 Research-status Report
  • [Presentation] 電子顕微鏡クライオトモグラフィーによるビブリオ菌極べん毛の外膜リングの構造と役割の解析2018

    • Author(s)
      Shiwei Zhu、錦野達郎、小嶋誠司、Jun Liu、本間道夫
    • Organizer
      第55回日本細菌学会中部支部総会
    • Related Report
      2018 Research-status Report
  • [Presentation] NMR法とCryo-ET法を用いたビブリオ菌べん毛モーター回転子FliGのGly-Glyリンカー回転方向変異体の構造解析2018

    • Author(s)
      錦野達郎、宮ノ入洋平、Zhu Shiwei、小嶋誠司、 Liu Jun、本間道夫
    • Organizer
      第44回日本生体エネルギー研究会
    • Related Report
      2018 Research-status Report

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Published: 2018-07-25   Modified: 2021-02-19  

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