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High resolution and dynamic structural analysis of the entire mammalian FoF1ATP synthase

Research Project

Project/Area Number 19K15749
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 38030:Applied biochemistry-related
Research InstitutionKyoto University

Principal Investigator

Jiko Chimari  京都大学, 複合原子力科学研究所, 特別研究員(RPD) (70585976)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
KeywordsFo F1ATP合成酵素 / ミトコンドリア / 単粒子構造解析 / ATP合成酵素 / 膜タンパク質複合体 / 膜蛋白質複合体 / 精製 / 界面活性剤 / 膜タンパク質
Outline of Research at the Start

哺乳動物のミトコンドリアFoF1ATP合成酵素の全体構造を決定するため、本研究では、安定で無傷な状態で本酵素を精製するため、独自に開発してきたカラムフリー精製について精製純度をさらに高め、全体構造を解析する。構造解析には①三次元結晶に対するX線回折と②単粒子に対するクライオ電顕により、高分解能で構造を決定する、及び③自由に回転する状態にあるものについてクライオ電顕により立体構造変化を捉える、という三つの手段を用い、本酵素のエネルギー伝達メカニズムの解明を目指す。

Outline of Final Research Achievements

Monomers, tetramers, and oligomers of mammalian mitochondrial FoF1ATP synthase, which are extremely unstable due to their flexibility with rotation, were stably purified without dissociation of subunits per form, and highly monodisperse cryogrids were successfully prepared. Single-particle structural analysis using cryo-electron microscopy led to a structure of the entire I F1-bound tetramer at approximately 7angstrom resolution.

Academic Significance and Societal Importance of the Research Achievements

本研究は、ミトコンドリアの内膜に存在し、哺乳動物の生命活動を維持するために必要なATPエネルギーの95%以上を生産し、また近年の研究によってミトコンドリア膜透過性遷移孔(PTP)として機能することが明らかになってきているFoF1ATP 合成酵素の高分解能構造解析である。その詳細な構造は、本酵素が関与する疾患の創薬研究の基盤となる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2023 2022 2021 2019

All Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Patent(Industrial Property Rights) (2 results) (of which Overseas: 1 results)

  • [Journal Article] Inhibition of ATP-synthase reverse-activity restores energy homeostasis in mitochondrial pathologies.2023

    • Author(s)
      Perez, R., Beninca, C., Fernandez del Rio, L., Baghdasarian, C. Shu S., Zanette, V., Gerle, C., Jiko, C., Khairallah, R., Khan, S., Pacheco, D. R. F., Shabane, B., Erion, K., Masand, R.,S. Dugar, S., Ghenoiu, C., Schreiner, G., Stiles, L., Liesa, M., Shirihai, O.S.
    • Journal Title

      EMBO Journal

      Volume: e111699 Issue: 10

    • DOI

      10.15252/embj.2022111699

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rapid and Highly Stable Membrane Reconstitution by LAiR Enables the Study of Physiological Integral Membrane Protein Functions.2023

    • Author(s)
      Hernandez, A., Asseri, A.H., Purugganan, A.J., Jiko, C., deRam, C., Lill, H., Pabst, M., Mitsuoka, K., Gerle, C., Bald, D., McMillan,D.G.G.
    • Journal Title

      ACS Central Science

      Volume: 9 Issue: 3 Pages: 494-507

    • DOI

      10.1021/acscentsci.2c01170

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Purified F-ATP synthase forms a Ca2+dependent high-conductance channel matching the mitochondrial permeability transition pore.2019

    • Author(s)
      Urbani A,Giorgio V,Carrer A, Franchin C,Arrigoni G, Jiko C,Abe K,Maeda S, Sginzawa-Itoh K, Bogers JF, McMillan DG, Gerle C, Szabo I, Bernardi P
    • Journal Title

      Nature communications

      Volume: 4341 Issue: 1 Pages: 4341-4341

    • DOI

      10.1038/s41467-019-12331-1

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Patent(Industrial Property Rights)] FoF1-ATP合成酵素オリゴマー2022

    • Inventor(s)
      慈幸千真理,森本幸 生, GERLE Christoph
    • Industrial Property Rights Holder
      慈幸千真理,森本幸 生, GERLE Christoph
    • Industrial Property Rights Type
      特許
    • Filing Date
      2022
    • Related Report
      2022 Annual Research Report
    • Overseas
  • [Patent(Industrial Property Rights)] FoF1-ATP合成酵素オリゴマー2021

    • Inventor(s)
      慈幸千真理、ゲーレ・クリストフ、森本幸生
    • Industrial Property Rights Holder
      京都大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2021
    • Related Report
      2021 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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