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Development of multi-resolution methods for large conformational changes coupling with biological reactions

Research Project

Project/Area Number 16K05526
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biological physics/Chemical physics/Soft matter physics
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

IWAHASHI Chigusa  国立研究開発法人理化学研究所, 計算科学研究センター, 研究員 (30442528)

Research Collaborator MATSUNAGA Yasuhiro  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords分子動力学法(MD) / 粗視化モデル / レアイベントサンプリング / ドメイン運動 / DoMEモデル / 分子動力学法 / String法 / 膜タンパク質 / string法 / レプリカ交換アンブレラポテンシャル(REUS)法 / マルチレゾリューションシミュレーション / 生物物理 / 化学物理 / マルチドメインタンパク質
Outline of Final Research Achievements

I aimed to develop analysis methods for large conformational changes of proteins that play important roles in biological functions. I have developed a coarse-grained (CG) model capable of efficiently sampling domain motion and extended the model to be applicable in membrane proteins and multi-domain proteins. In addition, a rare event sampling method is introduced to analyze a reaction pathway of a long-time process that is difficult to calculate by single molecular dynamics (MD) simulation. I have also developed a scheme to calculate the rare event sampling using the CG model. These results were published (partly in preparation) in international journals. Furthermore, it was released to the public as new functions of MD software developed by the team that I belong to.

Academic Significance and Societal Importance of the Research Achievements

タンパク質の大規模な構造変化は様々な生体機能の発現に利用されており、重要な研究課題の一つである。本研究課題は、従来のシミュレーションにおける空間・時間的困難を克服し、タンパク質の大規模構造変化とカップルする生体内化学反応の解析を可能とする。この課題で開発されたミュレーション手法を用いる事で、重要な生体機能に関わるタンパク質の反応解析を可能とする。開発された手法や手順の多くをフリーウェアとして一般に公開し、他の研究者にも利用可能とした。生体機能に関わるタンパク質の反応の解析は、薬剤やタンパク質変異体の生体機能への影響の理解に繋がり、医学、薬学分野への応用が期待できる。

Report

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

    (13 results)

All 2019 2018 2017 2016 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Remarks (2 results)

  • [Journal Article] Optimal Temperature Evaluation in Molecular Dynamics Simulations with a Large Time Step2018

    • Author(s)
      Jung Jaewoon、Kobayashi Chigusa、Sugita Yuji
    • Journal Title

      Journal of Chemical Theory and Computation

      Volume: 15 Issue: 1 Pages: 84-94

    • DOI

      10.1021/acs.jctc.8b00874

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Kinetic energy definition in velocity Verlet integration for accurate pressure evaluation2018

    • Author(s)
      Jung Jaewoon、Kobayashi Chigusa、Sugita Yuji
    • Journal Title

      The Journal of Chemical Physics

      Volume: 148 Issue: 16 Pages: 164109-164109

    • DOI

      10.1063/1.5008438

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] GENESIS 1.1: A hybrid-parallel molecular dynamics simulator with enhanced sampling algorithms on multiple computational platforms2017

    • Author(s)
      Kobayashi Chigusa、Jung Jaewoon、Matsunaga Yasuhiro、Mori Takaharu、Ando Tadashi、Tamura Koichi、Kamiya Motoshi、Sugita Yuji
    • Journal Title

      Journal of Computational Chemistry

      Volume: 38 Issue: 25 Pages: 2193-2206

    • DOI

      10.1002/jcc.24874

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Conformational fluctuations and changes of SR-Ca2+-ATPase on the E1/E2 transition2019

    • Author(s)
      小林千草
    • Organizer
      63rd Annual meeting of the biophysical society
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular dynamics simulations for dissociation of ligands in SR-Ca2+-ATPase2018

    • Author(s)
      小林千草
    • Organizer
      第56回日本生物物理学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Molecular Dynamics simulations for conformational changes on a reaction step of Ca2+-ATPase2018

    • Author(s)
      Chigusa Kobayashi
    • Organizer
      The biophysical society 62th annual meeeting
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Molecular dynamics simulations for conformational changes on E1/E2 transition of Ca2+-ATPase2017

    • Author(s)
      Chigusa Kobayashi
    • Organizer
      第55回日本生物物理学会年会シンポジウム
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] コンピュータシミュレーションによるCa2+-ATPaseのリガンド解離に伴う構造変化解析2017

    • Author(s)
      小林千草
    • Organizer
      日本生体エネルギー研究会第43回討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] Conformational changes of Ca2+-ATPase of depicted by hierarchical domain-motion analysis2017

    • Author(s)
      Chigusa Kobayashi
    • Organizer
      The 15th International conference on NaK-ATPase and related transport ATPases
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] コンピュータシミュレーションによるカルシウムイオンポンプの反応経路解析2016

    • Author(s)
      小林千草、松永康佑、Jaewoon Jung、杉田有治
    • Organizer
      日本生体エネルギー研究会第42回討論会
    • Place of Presentation
      名古屋工業大学(愛知県名古屋市)
    • Year and Date
      2016-12-20
    • Related Report
      2016 Research-status Report
  • [Presentation] P-type ATPaseの大規模構造変化を伴う反応メカニズム解析のためのマルチレゾリューション手法2016

    • Author(s)
      小林千草、松永康佑、Jaewoon Jung、杉田有治
    • Organizer
      第89回日本生化学会大会
    • Place of Presentation
      仙台国際センター・東北大学(宮城県仙台市)
    • Year and Date
      2016-09-26
    • Related Report
      2016 Research-status Report
    • Invited
  • [Remarks] GENESIS

    • URL

      http://www.aics.riken.jp/labs/cbrt/

    • Related Report
      2016 Research-status Report
  • [Remarks] 超並列分子動力学ソフトウェア「GENESIS」最新版を公開

    • URL

      http://www.aics.riken.jp/topics/160729.html

    • Related Report
      2016 Research-status Report

URL: 

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

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