• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Atomistic molecular dynamics simulation analysis of molecular physiological problems involving ion channel activity regulation

Research Project

Project/Area Number 21590241
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field General physiology
Research InstitutionTeikyo University

Principal Investigator

NISHIZAWA Kazuhisa  帝京大学, 医療技術学部, 教授 (00260935)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywords生体膜 / チャネル / トランスポーター / 脂質ラフト / 計算化学 / 脂質膜融合 / 分子動力学 / 分子シミュレーション / 構造生物化学 / 分子生物物理 / 自由エネルギー摂動法 / 脂質膜 / 膜ドメイン構造 / コレステロール / 膜融合 / 細胞内分子移動 / 膜ドメイン形成 / SNARE / イオンチャネル / カリウムチャネル
Research Abstract

To gain insight into structure-function relationship of Kv channel and other physiological issues, molecular dynamics(MD) simulations were conducted. Atomistic details regarding Kv channel closing mechanism were revealed. We also applied coarse-grained MD simulations to curved membranes, in particular, hemifusion-mimicking membrane systems. The latter analysis showed that lipids with a high degree of negative spontaneous curvature tend to be enriched at the junction of the bilayers that is highly curved. We also showed that cholesterol-dependent formation of lipid microdomains proceeds under strong influence of membrane curvature. The possibility that such curvature dependent localization of microdomains may contribute to the intracellular lipid sorting was discussed.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (15 results)

All 2011 2010 2009 Other

All Journal Article (9 results) (of which Peer Reviewed: 9 results) Book (2 results) Remarks (4 results)

  • [Journal Article] Coarse-grained simulations of branched bilayer membranes-Effects of cholesterol-dependent phase separation on curvature-driven lipid sorting2011

    • Author(s)
      Manami Nishizawa, Kazuhisa Nishizawa
    • Journal Title

      J Biophys Chem

      Volume: 2 Pages: 268-284

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Coarse-grained simulations of branched bilayer membranes-Effects of cholesterol-dependent phase separation on curvature-driven lipid sorting2011

    • Author(s)
      Manami Nishizawa, Kazuhisa Nishizawa
    • Journal Title

      Journal of Biophysical Chemistry

      Volume: 2 Issue: 03 Pages: 268-284

    • DOI

      10.4236/jbpc.2011.23032

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Curvature-driven lipid sorting : coarse-grained dynamics simulations of a membrane mimicking a hemifusion intermediate2010

    • Author(s)
      Manami Nishizawa, Kazuhisa Nishizawa
    • Journal Title

      J Biophys Chem

      Volume: 1 Pages: 86-95

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Molecular dynamics simulation analyses of stalk-inducing effect of viral fusion peptides : importance of oblique orientation in membranes2010

    • Author(s)
      Manami Nishizawa, Kazuhisa Nishizawa
    • Journal Title

      J Biophys Chem

      Volume: 1 Pages: 19-32

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Curvature-driven lipid sorting : coarse-grained dynamics simulations of a membrane mimicking a hemifusion intermediate2010

    • Author(s)
      Manami Nishizawa, Kazuhisa Nishizaw
    • Journal Title

      Journal of Biophysical Chemistry

      Volume: 1 Pages: 86-95

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular Dynamics Simulations of Kv Channels and Gating-Modifier Peptide Toxins2009

    • Author(s)
      Kazuhisa Nishizawa
    • Journal Title

      Current Computer-Aided Drug Design

      Volume: 5 Pages: 155-173

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Coupling of S4 helix Translocation and S6 Gating Analyzed by Molecular Dynamic Simulations of Mutated Kv channels2009

    • Author(s)
      Manami Nishizawa, Kazuhisa Nishizawa
    • Journal Title

      Biophys J

      Volume: 97 Pages: 90-100

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Coupling of S4 helix Translocation and S6 Gating Aualysed2009

    • Author(s)
      Manami Nishizawa, Kazahisa Nishizawa
    • Journal Title

      Biophysical Journal 97

      Pages: 90-100

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Molecular Dymamic Simulations of Kuchaunels2009

    • Author(s)
      Kazuhisa Nishzawa
    • Journal Title

      Curr. Comput. Aided Drug Des 5

      Pages: 155-173

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Book] Atomistic molecular simulation of gating modifier venom peptides-two binding modes and effects of lipid structure. In : Kamkin A(ed). Mechanosensitivity in Cells and Tissues 4 : Mechanosensitivity and Mechanotransduction2010

    • Author(s)
      Kazuhisa Nishizawa
    • Publisher
      Berlin, Springer
    • Related Report
      2011 Final Research Report
  • [Book] Mechanosensitivity of Cells and Tissues Mechanosensitivity and Mechanotransduction2010

    • Author(s)
      Kazuhisa Nishizawa
    • Publisher
      Springer
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://homepage3.nifty.com./~gene

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://homepage3.nifty.com./~gene

    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://homepage3.nifty.com/~gene

    • Related Report
      2009 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi