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Development of molecular dynamics simulation for hydronium ion in solution and the application to biomolecules

Research Project

Project/Area Number 17K15101
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Biophysics
Research InstitutionKeio University (2018)
The University of Tokyo (2017)

Principal Investigator

Watanabe Hiroshi  慶應義塾大学, 理工学研究科(矢上), 特任講師 (20767199)

Research Collaborator Yamada Masayuki  
Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords水素イオン / 分子シミュレーション / 凝縮系 / 量子化学 / ダイナミクス / 物理化学 / 分子動力学法 / プロトン移動 / QM/MM法 / 生物物理
Outline of Final Research Achievements

In the process of verifying and improving the method of incorporating the quantum chemical effects of solvation, we found an artifact that affects all hybrid model simulations. This artifact has not been discussed before, but the correction will be very important to reproduce the dynamics of hydronium ion. Therefore, I changed the original schedule and conducted a detailed analysis and propose the correction method for the artifacts, and succeeded in demonstrating the effectiveness.
Furthermore, we incorporated the continuous coordinate representation of the excess hydrogen ion in the aqueous solution system into the method that we have proposed before. As a result, we achieved of the stable and accurate molecular dynamics simulation for the hydrogen ion.

Academic Significance and Societal Importance of the Research Achievements

水素イオンは最も身近で重要な存在であるにも関わらず、時間発展の分子シミュレーションにおいて最も取り扱いが難しい対象であった。したがって、本研究において水素イオンを取り扱う理論的フレームワークが出来上がったことにより、今までダイナミクス計算で取り扱えなかった生体分子の(生体分子のプロトン輸送や構造の加水分解など)重要な現象や機能の解析が可能になることを示唆している。
また生体分子に限らず、水素イオンは溶液中での様々な化学反応に関連しているために重要な役割を果たしている。したがって以後これら多分野のシミュレーションにも応用され、様々な現象のメカニズム解明に役立つことが期待される。

Report

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

    (23 results)

All 2019 2018 2017 Other

All Int'l Joint Research (3 results) Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 6 results,  Acknowledgement Compliant: 2 results) Presentation (10 results) (of which Int'l Joint Research: 6 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] Boston University(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Ulm University/Karlsruhe Institute of Technology(ドイツ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Karlsruhe Institute of Technology/Ulm University(Germany)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Mutational analysis of the conserved carboxylates of anion channelrhodopsin-2 (ACR2) expressed in <i>Escherichia coli</i> and their roles in anion transport2018

    • Author(s)
      Kojima Keiichi、C. Watanabe Hiroshi、Doi Satoko、Miyoshi Natsuki、Kato Misaki、Ishikita Hiroshi、Sudo Yuki
    • Journal Title

      Biophysics and Physicobiology

      Volume: 15 Issue: 0 Pages: 179-188

    • DOI

      10.2142/biophysico.15.0_179

    • NAID

      130007472538

    • ISSN
      2189-4779
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Improvement of Performance, Stability and Continuity by Modified Size-Consistent Multipartitioning Quantum Mechanical/Molecular Mechanical Method2018

    • Author(s)
      Hiroshi C. Watanabe
    • Journal Title

      molecules

      Volume: 23 Issue: 8 Pages: 1882-1882

    • DOI

      10.3390/molecules23081882

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Incorporation of quantum chemical effects of solvent into molecular dynamics simulation2018

    • Author(s)
      Hiroshi C. Watanabe, Qiang Cui
    • Journal Title

      ChemRxiv

      Volume: -

    • DOI

      10.26434/chemrxiv.7744103.v2

    • Related Report
      2018 Annual Research Report
    • Open Access / Int'l Joint Research
  • [Journal Article] Cation solvation with quantum chemical effects modeled by a size-consistent multi-partitioning quantum mechanics/molecular mechanics method2017

    • Author(s)
      Hiroshi C. Watanabe, Maximilian Kubillus, Tomas Kubar, Robert Stach, Boris Mizaikoff, Hiroshi Ishikita
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 19 Issue: 27 Pages: 17985-17997

    • DOI

      10.1039/c7cp01708a

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Electron transfer pathways in a multi-heme cytochrome MtrF2017

    • Author(s)
      Hiroshi C. Watanabe, Yuki Yamashita, and Hiroshi Ishikita*
    • Journal Title

      Proc. Natl. Acad. Sci. U. S. A.

      Volume: 114 Issue: 11 Pages: 2916-2921

    • DOI

      10.1073/pnas.1617615114

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Origins of water molecules in the photosystem II crystal structure2017

    • Author(s)
      Naoki Sakashita, Hiroshi C. Watanabe, Takuya Ikeda, Keisuke Saito, Hiroshi Ishikita
    • Journal Title

      Biochemistry

      Volume: 56 Issue: 24 Pages: 3049-3057

    • DOI

      10.1021/acs.biochem.7b00220

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Structurally conserved channels in cyanobacterial and plant photosystem II2017

    • Author(s)
      Naoki Sakashita, Hiroshi C. Watanabe, Takuya Ikeda, and Hiroshi Ishikita*
    • Journal Title

      Photosynth. Res.

      Volume: 印刷中 Issue: 1-3 Pages: 75-85

    • DOI

      10.1007/s11120-017-0347-1

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Reply to Breuer et al.: Molecular dynamics simulations do not provide functionally relevant values of redox potential in MtrF2017

    • Author(s)
      Hiroshi C. Watanabe, Yuki Yamashita, Hiroshi Ishikita
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 201717048 Issue: 47 Pages: 201717048-201717048

    • DOI

      10.1073/pnas.1717048114

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Incorporation of quantum chemical effects of solvent into molecular dynamics simulation2019

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      American Chemical Society National Meeting & Expo
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 実用的なアプケーションへ向けたsize-consistent multipartitioning法の改良2018

    • Author(s)
      渡邉宙志
    • Organizer
      第12回分子科学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Structural modeling and molecular simulations provide insights into the functional mechanism of anion channelrhodpsin-22018

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      The 56th annual meeting of Biophysical Society of Japan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Recent progress and development toward incorporation of quantum chemical effects by size-consistent multipartitioning quantum mechanical/ molecular mechanical method2018

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      Joint Conference of EMLG/JMLG Meeting and the 41th Symposium on Solution Chemistry of Japan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantum chemical effects on solvation incorporated by size-consistent multipartitioning quantum mechanics/molecular mechanics method2018

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      International Symposium on Molecular Science - Physical Chemistry/Theoretical Chemistry, Chemoinformatics, Computational Chemistry - Cosponsered by Japan Chemical Society for Molecular Science
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 溶媒の量子効果を取り込んだ陽イオン溶媒和構造とダイナミクス2017

    • Author(s)
      渡邉宙志
    • Organizer
      第20回理論化学討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] Electron transfer pathways in a multiheme cytochrome MtrF2017

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      第17回日本蛋白質科学会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] Electron transfer pathways in a multiheme cytochrome MtrF2017

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      Extracellular Electron Transfer: Mechanisms and Opportunities
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 溶媒の量子化学効果を取り込んだ赤外分光計算2017

    • Author(s)
      渡邉宙志
    • Organizer
      第11回分子科学討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] Cation solvation with quantum chemical effect incorporated by size-consistent multi-partitioning quantum mechanics/moelcular mechanics method2017

    • Author(s)
      Hiroshi Watanabe
    • Organizer
      The 55th Annual Meeting of The Biophysical Society of Japan
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Remarks] 共同研究者 Dr. Tomas Kubarの業績リスト

    • URL

      http://cbp.cfn.kit.edu/joomla/index.php/publications

    • Related Report
      2017 Research-status Report
  • [Remarks] 共同研究者 Prof. Boris Mizaikoffの業績リスト

    • URL

      https://www.uni-ulm.de/en/nawi/iabc/research/research-group-mizaikoff/publications/

    • Related Report
      2017 Research-status Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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