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ウィルス感染における蛋白質に誘導された細胞膜融合動力学の計算機による研究

Research Project

Project/Area Number 15700248
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeSingle-year Grants
Research Field Bioinformatics/Life informatics
Research InstitutionInternational Christian University (2005)
The University of Aizu (2003-2004)

Principal Investigator

LUKAS Pichl (LUKAS PICHL / PICHL Lukas)  国際基督教大学, 教養学部, 助教授 (10343394)

Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2005: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2004: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2003: ¥600,000 (Direct Cost: ¥600,000)
Keywords細胞膜 / MCシミュレーション / 量子化学 / レトロウイルス / MRD-CI / Molecular Dynamics / Preintegration complex / VPR蛋白質
Research Abstract

平成15-16年度で開発した計算方法を実行し、理化学研究所(分子ウィルスグループ)とルンド大学で行った実験結果を解析した。特にVprタンパク質を中心として、様々な分子力学計算解析を行った。
脂質、コレステロール、および界面活性剤の混合物を用いた音波浮揚ドロップ内で形成された脂質二重層にVpr蛋白質あるいはその変異体を組み込んだ。
構成成分の脂質とコレステロール濃度の効果を検討した。溶液中でのVprオリゴマー、Vpr-importinα、およびVpr-脂質単層膜、Vpr細胞膜貫通型Gromacsを用いたMDダイナミックシミュレーションによるin silicoスクリーニングの解析を行った。
本研究では、Vprとimportinαは結合するサイトを理解して、それぞれの蛋白質のαhelixファンクションを明らかにした。Energy Minimizationアルゴリズムを使い、in silico結合可能性スクリーニング方法を最大化して、それぞれの蛋白質のアミノ酸に突然変異を含められるスクリーニングを可能とした。
生化学実験(理化学研究所、間教授クループ)から得られたパラメータを取り入れたモデルをコンピュータ上で計算し、ウィルスと脂質二重層の動的挙動を追跡することにより融合過程における情報を得て、重要なアミノ酸シクェンスを解析した。現在、EMベースのHTS計算方法を使い、Vpr2量対及びimportinα2量対システムへの応用を次の目的としている。

Report

(3 results)
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (20 results)

All 2005 2004 Other

All Journal Article (12 results) Book (1 results) Publications (7 results)

  • [Journal Article] The Effects of Positron Binding and Annihilation Mechanisms in Biomolecules on PET Resolution2005

    • Author(s)
      L.Pichl, M.Tachikawa, M.Kimura, R.J.Buenker, M.Kimura, J.M.Rost
    • Journal Title

      IEEE Transactions on Nuclear Science 52(No.6)

      Pages: 2810-2817

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Positron Binding Energies for Alkali Hydrides2005

    • Author(s)
      R.J.Buenker, H.-P.Liebermann, V.Melnikov, M.Tachikawa, L.Pichl, M.Kimura
    • Journal Title

      Journal of Physical Chemistry A 109

      Pages: 5956-5964

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Elastic and electron-capture processes in H++C2H4 collisions below the 10-keV regime2005

    • Author(s)
      R.Suzuki, N.S.Rai, H.-P.Liebermann, R.J.Buenker, L.Pichl, M.Kimura
    • Journal Title

      Physical Review A 70

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Potential energy of H2-(2Sigma+u) in the bound-state region2005

    • Author(s)
      L.Pichl
    • Journal Title

      Czechoslovak Journal of Physics 55(No.2)

      Pages: 167-171

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Theoretical study of the CH2+O photodissociation of formaldehyde adsorbed on the Ag(111) surface2005

    • Author(s)
      D.B.Kokh, R.J.Buenker, H.-P.Liebermann, L.Pichl, J.L.Whitten
    • Journal Title

      Journal of Physical Chemistry B 109

      Pages: 18070-18080

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Science Mentor Engine: A Robust System for the On-Line Retrieval of Specialized Scientific Articles from the Electronic Journal Databases2005

    • Author(s)
      L.Pichl, M.Suzuki, H.Kashiwagi, K.Joe, D.Kato, A.Sasaki
    • Journal Title

      GESTS International Transaction on Computer Science and Engineering 12(No.1)

      Pages: 93-104

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Molecular dynamics simulation of lipid-protein ensembles2004

    • Author(s)
      K.Yamanishi, L.Pichl, Y.Nitahara-Kasahara, Y.Aida
    • Journal Title

      International Journal of Bioelectromagnetism Vol.7 No.2

      Pages: 35-42

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Three dimensional space interaction model for HIV-1 accessory protein Vpr and membrane lipid molecules2004

    • Author(s)
      L.Pichl, K.Yamanishi, Y.Nitahara, Y.Aida
    • Journal Title

      Journal of Three Dimensional Images Vol.18 No.4

      Pages: 61-67

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Isotope effect in charge-transfer collisions of slow H+ and D+ ions with H2, HD, and D2 molecules2004

    • Author(s)
      T.Kusakabe, L.Pichl, R.J.Buenker, M.Kimura, H.Tawara
    • Journal Title

      Physical Review A Vol.70

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Branching Ratios for Secondary Processes of Water Ions Induced by Proton Beams in Radiation Therapy of Cancer2004

    • Author(s)
      L.Pichl, M.Kimura, Y.Li, R.J.Buenker
    • Journal Title

      IEEE Transactions on Nuclear Science Vol.51

      Pages: 1407-1411

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Electron capture and excitation in collisions of O+(4S,2D,2P) with H2 molecules2004

    • Author(s)
      L.Pichl, Y.Li, H.-P.Liebermann, R.J.Buenker, M.Kimura
    • Journal Title

      Physical Review A Vol.69

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A coupled treatment of 1Sigma+ and 3Pi states of AgH molecule2004

    • Author(s)
      Y.Li, H.-P.Liebermann, R.J.Buenker, L.Pichl
    • Journal Title

      Chemical Physics Letters Vol.389

      Pages: 101-107

    • Related Report
      2004 Annual Research Report
  • [Book] Access and Visualization of Dynamic Contents2005

    • Author(s)
      DNIS 2005 (Ed. S.Bhalla)
    • Publisher
      Springer
    • Related Report
      2004 Annual Research Report
  • [Publications] L.Pichl, R.J.Buenker, M.Kimura: "Calculation of cross sections for proton and antiproton stopping in molecules"Advances in Quantum Chemistry. (Accepted In print). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] L.Pichl, S.Zou, M.Kimura, I.Murakami, T.Kato: "Total, partial and differential ionization cross sections in p-H collisions in the energy region of 0.1 keV/u - 10 keV/u"Journal of Physical and Chemical Reference Data. (Accepted In print). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] L.Pichl, P.-A.Fayolle, A.Watanabe, M.Kimura, H.Sato: "Visualization of ionization process in two Coulomb center systems versus validity of the saddle point hypothesis"Journal of the 3D Forum Society. Vol.7 No.4. 27-32 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] T.Kusakabe, M.Kimura, L.Pichl, R.J.Buenker, H.Tawara: "Observation of significant difference between charge transfer in collisions of H+ ions with H2 and D2 molecules in high-eV to low-keV range"Physical Review A. Vol.68. 050701:1-050701:4 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Imai, Kimura, Gu, Hirsh, Buenker, Wang, Stancil, L.Pichl: "Ab initio study of one- and two-electron transfer processes in collisions of Ne(2+) with He at low to intermediate energies"Physical Review A. Vol.68. 01276:1-01276:8 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Ngassam, Motapon, Florescu, L.Pichl, Schneider, Weiner: "Vibrational relaxation and dissociative recombination of H2+ induced by slow electrons"Physical Review A. Vol.68. 032704:1-032704:8 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] S.Zou, L.Pichl, M.Kimura, T.Kato: "NIFS-DATA-SERIES-71 (ISSN 0915-6364)"National Institute for Fusion Science. 1-47 (2003)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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