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Biological water-oxidizing complex: a nano-sized manganese-calcium oxide in a protein environment

Journal

PHOTOSYNTHESIS RESEARCH
Volume 114, Issue 1, Pages 1-13

Publisher

SPRINGER
DOI: 10.1007/s11120-012-9778-x

Keywords

Artificial photosynthesis; Photosystem II; Water-oxidizing complex; Nano-sized manganese-calcium cluster; Oxygen; Water

Categories

Funding

  1. Russian Foundation for Basic Research [11-04-01389a, 11-04-92690a, 12-04-92101a]
  2. BMBF, Bilateral Cooperation between Germany and Russia [8125]
  3. Brain Pool Program of the Ministry of Education Science and Technology (MEST)
  4. Korean Federation of Science and Technology (KOFST)
  5. National Research Foundation (NRF) of Korea
  6. MEST [2012-0004968]
  7. National Research Foundation of Korea [121S-4-3-0332] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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The resolution of Photosystem II (PS II) crystals has been improved using isolated PS II from the thermophilic cyanobacterium Thermosynechococcus vulcanus. The new 1.9 resolution data have provided detailed information on the structure of the water-oxidizing complex (Umena et al. Nature 473: 55-61, 2011). The atomic level structure of the manganese-calcium cluster is important for understanding the mechanism of water oxidation and to design an efficient catalyst for water oxidation in artificial photosynthetic systems. Here, we have briefly reviewed our knowledge of the structure and function of the cluster.

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