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Architecture of the Photosynthetic Oxygen-Evolving Center
Abstract
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 Thermosynechococcus elongatus 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 3 CaO 4 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.
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Cited by
Chatenet, M., Pollet, B. G., Dekel, D. R., Dionigi, F., Deseure, J., Millet, P., Braatz, R. D., Bazant, M. Z., Eikerling, M., Staffell, I., et al. (2022) · Chemical Society Reviews · doi:10.1039/d0cs01079k · Cited by 2,025
Photosynthetic energy conversion: natural and artificial
Barber, J. (2009) · Chem. Soc. Rev. · doi:10.1039/b802262n · Cited by 1,843
Self-citationThe Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis
Dau, H., Limberg, C., Reier, T., Risch, M., Roggan, S., & Strasser, P. (2010) · ChemCatChem · doi:10.1002/cctc.201000126 · Cited by 1,783
Proton-coupled electron transfer
Huynh, M. H. V., & Meyer, T. J. (2007) · Chemical Reviews · doi:10.1021/cr0500030 · Cited by 1,659
Crabtree, G. W., Dresselhaus, M. S., & Buchanan, M. V. (2004) · Physics Today · doi:10.1063/1.1878333 · Cited by 1,610
Metadata
- Authors
- Ferreira, K. N., Iverson, T. M., Maghlaoui, K., Barber, J., & Iwata, S.
- Venue
- Science
- Published
- 2004-03-19
- Volume
- 303
- Issue
- 5665
- Pages
- 1831-1838
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2057863409
- Cited by
- 3,329
- References
- 0
- FWCI
- 81.89
- Type
- journal article
- Language
- en
- Open access
- closed
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- Ferreira, K. N., Iverson, T. M., Maghlaoui, K., Barber, J., & Iwata, S. (2004). Architecture of the Photosynthetic Oxygen-Evolving Center. Science. https://doi.org/10.1126/science.1093087
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