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Title: Structural basis of photosynthetic water-splitting

Photosynthetic water-splitting takes place in photosystem II (PSII), a membrane protein complex consisting of 20 subunits with an overall molecular mass of 350 kDa. The light-induced water-splitting reaction catalyzed by PSII not only converts light energy into biologically useful chemical energy, but also provides us with oxygen indispensible for sustaining oxygenic life on the earth. We have solved the structure of PSII at a 1.9 Å resolution, from which, the detailed structure of the Mn{sub 4}CaO{sub 5}-cluster, the catalytic center for water-splitting, became clear. Based on the structure of PSII at the atomic resolution, possible mechanism of light-induced water-splitting was discussed.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Graduate School of Natural Science and Technology/Faculty of Science, Okayama University, Okayama (Japan)
  2. The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Osaka, Japan and PRESTO, JST (Japan)
  3. The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Osaka (Japan)
  4. The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Osaka, Japan and Department of Chemistry, Graduate School of Science, Osaka City University, Osaka (Japan)
Publication Date:
OSTI Identifier:
22261736
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1568; Journal Issue: 1; Conference: International workshop on solar-chemical energy storage (SolChES), Sendai (Japan), 23-28 Jul 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
60 APPLIED LIFE SCIENCES; MEMBRANE PROTEINS; OXYGEN; PHOTOSYNTHESIS; WATER