Architecture of the Photosynthetic Oxygen-Evolving Center

DOI Web Site 被引用文献257件
  • Kristina N. Ferreira
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK.
  • Tina M. Iverson
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK.
  • Karim Maghlaoui
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK.
  • James Barber
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK.
  • So Iwata
    Department of Biological Sciences, Imperial College London, London, SW7 2AZ, UK.

書誌事項

公開日
2004-03-19
DOI
  • 10.1126/science.1093087
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> Photosynthesis uses light energy to drive the oxidation of water at an oxygen-evolving catalytic site within photosystem II (PSII). We report the structure of PSII of the cyanobacterium <jats:italic>Thermosynechococcus elongatus</jats:italic> at 3.5 angstrom resolution. We have assigned most of the amino acid residues of this 650-kilodalton dimeric multisubunit complex and refined the structure to reveal its molecular architecture. Consequently, we are able to describe details of the binding sites for cofactors and propose a structure of the oxygen-evolving center (OEC). The data strongly suggest that the OEC contains a cubane-like Mn <jats:sub>3</jats:sub> CaO <jats:sub>4</jats:sub> cluster linked to a fourth Mn by a mono-μ-oxo bridge. The details of the surrounding coordination sphere of the metal cluster and the implications for a possible oxygen-evolving mechanism are discussed. </jats:p>

収録刊行物

  • Science

    Science 303 (5665), 1831-1838, 2004-03-19

    American Association for the Advancement of Science (AAAS)

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