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Theoretical study on trapping, transfer and fixation of solar radiation energy in photosynthesis of higher plants

Research Project

Project/Area Number 15540389
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Biophysics/Chemical physics
Research InstitutionUniversity of Tsukuba

Principal Investigator

SUMI Hitoshi  University of Tsukuba, Graduate school of Pure and Applied Sciences, Professor, 数理物質科学研究科, 教授 (10134206)

Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2005: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥900,000 (Direct Cost: ¥900,000)
Keywordsphotosynthetic bacteria / photosynthetic reaction center / LHI / special pair / photosystem II / superexchange process / virtual intermediate state / excitation energy transfer / 生物物理 / 化学物理 / 生体分子 / 電子伝達 / 励起エネルギー捕獲 / 光合成 / 光合成アンテナ系 / 光化学系I / 雷子移動 / 赤いクロロフィル / 量子力学的虚の仲介 / 電子移動 / 再配置エネルギー / 電子伝達蛋白質 / 励起子状態 / フェルスター理論 / 量子力学コヒーレンス
Research Abstract

In research of biological processes, it is an important step to clarify the structure of biological polymers and their arrangement in proteins. In photosynthesis, it was only recent, after 1984, that 3-d structures of protein-pigment complexes in photosystems of photosynthetic bacteria were first clarified. Since then, research of photosynthesis has greatly been developed. Photosynthesis by these bacteria, however, uses substances like H2S, but H2O, as starting materials, and hence does not evolve oxygen. Accordingly, it had been awaited to clarify 3-d structures of protein-pigment complexes participating in oxygen-evolving photosynthesis by higher plants. It was finally achieved since 2001.
However, a big issue reveals itself. Organisms participating in the initial processes of photosynthesis are the reaction center and the antenna system, in which the core antenna encloses most closely the reaction center. It was clarified that the arrangement of pigments in the core antenna is very d … More ifferent between anoxygenic and oxygenic kinds of photosynthesis, although that in the reaction center is similar between them. It has been accepted that these two kinds of photosynthesis have evolved from a common ancestor, departing from each other. Therefore, the most important processes essential in photosynthesis should be nearly common between these two kinds of photosynthesis. This cannot be understood from the structure of the reaction center ant the antenna system.
As the most important achievement of the present work, it was clarified that the mechanism for trapping of pigment excitation energies from the core antenna by the reaction center, quickly followed by the initial fixation of excitation energies into the charge-separated state in the reaction center, is conserved between the two kinds of photosynthesis. This reaction is most important in the whole of the initial photosynthetic processes, limiting it, and photosynthesis would become difficult if this reaction mechanism was changed essentially. Accordingly, it must be conserved in evolution. In other words, the present work clarified the mechanism of the most important reaction in the whole of the initial photosynthetic processes, Less

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (27 results)

All 2006 2005 2004 2003 Other

All Journal Article (20 results) Book (3 results) Publications (4 results)

  • [Journal Article] K. Mukai, and H. Sumi; A single chlorophyll in each of the core antennas CP43 and CP47 transferring excitation energies to the reaction center in Photosystem II of photosynthesis2006

    • Author(s)
      K.Saito, T.Kikuchi, M.Nakayama, K.Mukai, H.Sumi
    • Journal Title

      J. Photochem. Photobiol. A : Chem. 178

      Pages: 271-280

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The importance of a hot-sequential mechanism in triplet-state formation by charge recombination in reaction centers of bacterial photosynthesis2006

    • Author(s)
      K.Saito, K.Mukai, H.Sumi
    • Journal Title

      Chem. Phys. 326

      Pages: 221-229

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A single chlorophyll in each of the core antennas CP43 and CP47 transferring excitation energies to the reaction center in Photosystem II of photosynthesis2006

    • Author(s)
      K.Saito, T.Kikuchi, M.Nakayama, K.Mukai, H.Sumi
    • Journal Title

      J.Photochem.Photobiol.A : Chem. 178

      Pages: 271-280

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The importance of a hot-sequential mechanism in triplet-state formation by charge recombination in reaction centers of bacterial photosynthesis2006

    • Author(s)
      K.Saito, K.Mukai, H.Sumi
    • Journal Title

      Chem.Phys. 326

      Pages: 221-229

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A single chlorophyll in each of the core antennas CP43 and CP47 transferring excitation energies to the reaction center in Photosystem II of photosynthesis2006

    • Author(s)
      K.Saito, T.Kikuchi, M.Nakayama, K.Mukai, H.Sumi
    • Journal Title

      J.Photochem.Photobiol.A, Chem 178

      Pages: 271-280

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The importance of a hot-sequential mechanism in triplet-state formation by charge recombination in reaction centers of bacterial photosynthesis2006

    • Author(s)
      K.Saito, K.Mukai, H.Sumi
    • Journal Title

      Chem.Phys. (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Physics and evolution in initial processes of photosynthesis ; solar-energy harvesting, excitation-energy transfer and its initial fixation2006

    • Author(s)
      H.Sumi, K.Mukai, K.Saito
    • Journal Title

      Sci.Tech.Adv.Materials (In press)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Excited States of Pigments in Photosystem II Reaction Centers of Photosynthesis : Characterization into a Central Dimer and Remaining Monomers2005

    • Author(s)
      K.Saito, K.Mukai, H.Sumi
    • Journal Title

      Chem. Phys. Lett. 401

      Pages: 122-129

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Excited States of Pigments in Photosystem II Reaction Centers of Photosynthesis : Characterization into a Central Dimer and Remaining Monomers2005

    • Author(s)
      K.Saito, K.Mukai, H.Sumi
    • Journal Title

      Chem.Phys.Lett. 401

      Pages: 122-129

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Primary Charge Separation in Reaction Center is Unique in Photosystem II, Unistep from Accessory Chlorophylls by Superexchange Virtual Mediation of P6802005

    • Author(s)
      K.Mukai, K.Saito, H.Sumi
    • Journal Title

      Photosynthesis : Fundamental Aspects to Global Perspectives (edited by A.van der Est, D.Bruce) (International Society of Photosynthesis)

      Pages: 329-331

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Excited states of pigments in photosystem II reaction centers of photosynthesis : Characterization into a central dimer and remaining monomers2005

    • Author(s)
      K.Saito, K.Mukai, H.Sumi
    • Journal Title

      Chemical Physics Letters 401

      Pages: 122-129

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Uphill Energy Trapping by Reaction Center in Bacterial Photosynthesis. 2 : Unistep Charge Separation, Virtually Mediated by Special Pair, by Photoexcitation in Place of Excitation Transfer from the Antenna System2004

    • Author(s)
      H.Sumi
    • Journal Title

      J. Phys. Chem. B 108

      Pages: 11702-11801

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Uphill Energy Trapping by Reaction Center in Bacterial Photosynthesis. 2 : Unistep Charge Separation, Virtually Mediated by Special Pair, by Photoexcitation in Place of Excitation Transfer from the Antenna System2004

    • Author(s)
      H.Sumi
    • Journal Title

      J.Phys.Chem. B 108

      Pages: 11702-11801

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Uphill energy trapping by reaction center in bacterial photosynthesis. 2. Unistep charge separation, virtually mediated by special pair, by photoexcitation2004

    • Author(s)
      Hitoshi Sumi
    • Journal Title

      Journal Physical Chemistry B 108・31

      Pages: 11792-11801

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Detection of the Upper Edge of Exciton Multiplets in the Antenna Complexes LH1 and LH2 of Bacterial Photosynthesis2003

    • Author(s)
      H.Sumi, K.Mukai
    • Journal Title

      Chem. Phys. Lett. 368

      Pages: 547-554

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Path-integral Monte Carlo Calculation of Reaction-Diffusion Equation2003

    • Author(s)
      K.Ando, H.Sumi
    • Journal Title

      J. Chem. Phys. 118

      Pages: 8315-8320

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Efficient Excitation Energy Transfer in Long Meso-Meso Linked Zn(II) Porphyrin Arrays Bearing a 5,15-Bisphenylethynylated Zn(II) Porphyrin Acceptor2003

    • Author(s)
      N.Aratani, H.S.Cho, T.K.Ahn, S.Cho, D.Kim, H.Sumi, A.Osuka
    • Journal Title

      J. Am. Chem. Soc. 125

      Pages: 9668-9681

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Detection of the Upper Edge of Exciton Multiplets in the Antenna Complexes LH1 and LH2 of Bacterial Photosynthesis2003

    • Author(s)
      H.Sumi, K.Mukai
    • Journal Title

      Chem.Phys.Lett. 368

      Pages: 547-554

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Path-integral Monte Carlo Calculation of Reaction-Diffusion Equation2003

    • Author(s)
      K.Ando, H.Sumi
    • Journal Title

      J.Chem.Phys. 118

      Pages: 8315-8320

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Efficient Excitation Energy Transfer in Long Meso-Meso Linked Zn(II) Porphyrin Arrays Bearing a 5, 15-Bisphenylethynylated Zn(II) Porphyrin Acceptor2003

    • Author(s)
      N.Aratani, H.S.Cho, T.K.Ahn, S.Cho, D.Kim, H.Sumi, A.Osuka
    • Journal Title

      J.Am.Chem.Soc. 125

      Pages: 9668-9681

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] Photosynthesis : Fundamental Aspects to Global Perspectives (Primary Charge Separation in Reaction Center is Unique in Photosystem II, Unistep from Accessory Chlorophylls by Superexchange Virtual Mediation of P680)2005

    • Author(s)
      K.Mukai, K.Saito, H.Sumi
    • Publisher
      The International Society of Photosynthesis
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] Photosynthesis ; Fundamental Aspects to Global Perspectives(分担執筆)2005

    • Author(s)
      K.Mukai, K.Saito, H.Sumi
    • Publisher
      International Society of Photosynthesis(Published as a CD)
    • Related Report
      2005 Annual Research Report
  • [Book] Photosynthesis : Fundamental Aspects to Global Perspectives (edited by A.van der Est and D.Bruce)2005

    • Author(s)
      K.Mukai, K.Saito, H.Sumi
    • Publisher
      (in press)
    • Related Report
      2004 Annual Research Report
  • [Publications] H.Sumi(第1著者のみ記載): "Detection of the upper edge of exciton multiplets in the antenna complexes LH1 and LH2 of bacterial photosynthesis"Chem.Phys.Lett.. 368. 547 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] K.Ando(第1著者のみ記載): "Path Integral Monte Carlo Calculation of Reaction-Diffusion Equation"J.Chem.Phys.. 118. 8315 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] N.Aratani(第1著者のみ記載): "Efficient excitation energy transfer in long meso-meso linked Zn(II) porphyrin arrays bearing a5, 15-bisphenylethynylated Zn(II)porphyrin acceptor"J.Am.Chem.Soc.. 125. 9668 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 住 斉(第1著者のみ記載): "電子伝達蛋白質における酸化・還元再配置エネルギーの直接測定:光誘起STMのV-I特性による"表面科学. 24. 8 (2003)

    • Related Report
      2003 Annual Research Report

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

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