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Mechanisms of actin polymerization, ATP hydrolysis, and filament severing revealed by F-form crystal structures

Research Project

Project/Area Number 16K14708
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Biophysics
Research InstitutionNagoya University

Principal Investigator

Takeda Shuichi  名古屋大学, 理学研究科, 研究員 (50509081)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsアクチン / X線結晶構造解析 / フラグミン / ゲルゾリンスーパーファミリー / ATP加水分解 / 繊維切断 / 構造生物学 / ゲルゾリン
Outline of Final Research Achievements

The crystal structure of four actin subunits in complex with fragmin, a gelsolin superfamily protein, was solved at 2.3 A resolution. In addition, the crystal structures of single actin molecule in complex with a fragmin N-terminal domain, adopting the filamentous conformation, were determined at 1.2 A resolution. These F-form actin structures have made it possible to discuss the mechanism of actin polymerization and ATP hydrolysis at atomic resolution.

Academic Significance and Societal Importance of the Research Achievements

アクチンは不定長に重合するタンパク質であるため、これまで繊維状態での結晶構造は報告されていなかった。今回アクチン切断因子であるフラグミンとの共結晶化という方法によって、世界初のアクチン繊維構造の解明に成功した。本研究の成果は真核細胞中に最も大量に存在するタンパク質であるアクチンの機能を理解する上で極めて重要である。

Report

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

    (14 results)

All 2019 2018 2017 2016

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 5 results,  Invited: 5 results)

  • [Journal Article] Polymerization and depolymerization of actin with nucleotide states at filament ends2018

    • Author(s)
      Fujiwara Ikuko、Takeda Shuichi、Oda Toshiro、Honda Hajime、Narita Akihiro、Ma?da Yuichiro
    • Journal Title

      Biophysical Reviews

      Volume: 10 Issue: 6 Pages: 1513-1519

    • DOI

      10.1007/s12551-018-0483-7

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural basis for cofilin binding and actin filament disassembly2018

    • Author(s)
      Tanaka, K., Takeda, S., Mitsuoka, K., Oda, T., Kimura-Sakiyama, C., Maeda, Y., Narita, A.
    • Journal Title

      Nat Commun

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comprehensive analysis of motions in molecular dynamics trajectories of the actin capping protein and its inhibitor complexes2016

    • Author(s)
      Koike, R., Takeda, S., Maeda, Y., Ota, M.
    • Journal Title

      Proteins

      Volume: 未定 Issue: 7 Pages: 948-956

    • DOI

      10.1002/prot.25043

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] BL2S1を利用したX線結晶構造解析から明らかとなったアクチン重合・ATP加水分解機構2019

    • Author(s)
      武田修一、成田哲博、小田俊郎、小池亮太郎、森次圭、太田元規、兼松佑典、藤原郁子、田中康太郎、永江峰幸、渡邉信久、前田雄一郎
    • Organizer
      第8回名古屋大学シンクロトロン光研究センターシンポジウム
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Atomic resolution structures of F‐form actin: mutual switching between G/F transition and ATPase2018

    • Author(s)
      Shuichi Takeda, Akihiro Narita, Toshiro Oda, Nobuhisa Watanabe, Takayuki Nagae, Motonori Ota, Ryotaro Koike, Kei Moritsugu, Yusuke Kanematsu, Ikuko Fujiwara, Kotaro Tanaka, Yuichiro Maeda
    • Organizer
      The 47th European muscle conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The structure of F-form actin at atomic resolutions: mutual switching between polymorphic transition and ATPase2018

    • Author(s)
      Shuichi Takeda, Akihiro Narita, Toshiro Oda, Nobuhisa Watanabe, Y, Takayuki Nagae, Motonori Ota, Ryotaro Koike, Kei Moritsugu, Yusuke Kanematsu, Ikuko Fujiwara, Kotaro Tanaka, Yuichiro Maeda
    • Organizer
      Myofilament conference 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] F-form crystal structures: Mechanisms of actin assembly and F-actin ATPase2018

    • Author(s)
      Shuichi Takeda, Akihiro Narita, Toshiro Oda, Kotaro Tanaka, Ryotaro Koike, Motonori Ota, Ikuko Fujiwara, Nobuhisa Watanabe, Yuichiro Maeda
    • Organizer
      The 62th Annual Meeting of Biophysical Society
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] F型アクチンの結晶構造とアクチン集合メカニズム2017

    • Author(s)
      武田修一、前田雄一郎
    • Organizer
      生体運動研究合同班会議
    • Place of Presentation
      神戸国際会議場, 兵庫県神戸市
    • Year and Date
      2017-01-06
    • Related Report
      2016 Research-status Report
  • [Presentation] ATPase mechanism and dynamic assembly of actin revealed by the F-form crystal structures2017

    • Author(s)
      武田 修一、成田 哲博、小田俊郎、田中 康太郎、小池 亮太郎、太田 元規、藤原 郁子、渡邉 信久、前田 雄一郎
    • Organizer
      第55回日本生物物理学会年会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Actin-cofilin complex structure at 3.8 A resolution revealed by cryo-EM2017

    • Author(s)
      田中 康太郎、武田 修一、光岡 薫、小田 俊郎、前田 雄一郎、成田 哲博
    • Organizer
      第55回日本生物物理学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 高分解能X線結晶構造から明らかとなったアクチン重合・ATP加水分解機構2017

    • Author(s)
      武田 修一、成田 哲博、小田 俊郎、田中 康太郎、小池 亮太郎、太田 元規、藤原 郁子、渡邉 信久、前田 雄一郎
    • Organizer
      平成29年度日本結晶学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] F型アクチンの結晶構造2017

    • Author(s)
      武田修一、成田哲博、小田俊朗、田中康太郎、渡邉信久、前田雄一郎
    • Organizer
      名古屋大学シンクロトロン光研究センターシンポジウム
    • Place of Presentation
      名古屋大学, 愛知県名古屋市
    • Related Report
      2016 Research-status Report
  • [Presentation] Crystal Structure of the “F-form” Actin in Complex with Fragmin2016

    • Author(s)
      Shuichi Takeda, Akihiro Narita, Kotaro Tanaka, Toshiro Oda, Nobuhisa Watanabe, Yuichiro Maeda
    • Organizer
      Now in actin study: Motor protein research reaching a new stage
    • Place of Presentation
      名古屋大学, 愛知県名古屋市
    • Year and Date
      2016-12-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Crystal Structure of Actin 4-mer in Complex with 2 Fragmin Molecules and the Mechanism of Actin Filament Assembly2016

    • Author(s)
      Takeda, S., Narita, A., Oda, T., Tanaka, K., Maeda, Y.
    • Organizer
      Gordon Research Conference, Muscle & Molecular Motors
    • Place of Presentation
      Mount Snow, West Dover, Vermont, USA
    • Year and Date
      2016-07-17
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited

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

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