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Where Plants Make Oxygen: a Structural Model for the Photosynthetic Oxygen-Evolving Manganese Cluster
Abstract
In the photosynthetic evolution of oxygen, water oxidation occurs at a catalytic site that includes four manganese atoms together with the essential cofactors, the calcium and chlorine ions. A structural model and a determination of the manganese oxidation states based on x-ray absorption spectroscopy are presented. The salient features, in both higher plants and cyanobacteria, are a pair of di-μ-oxo bridged manganese binuclear clusters linked by a mono-μ-oxo bridge, one proximal calcium atom, and one halide. In dark-adapted samples, manganese occurs in oxidation states (III) and (IV). Data from oriented membranes display distinct dichroism, precluding highly symmetrical structures for the manganese complex.
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Cited by
The 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
Protein Radicals in Enzyme Catalysis
Stubbe, J., & van der Donk, W. A. (1998) · Chemical Reviews · doi:10.1021/cr9400875 · Cited by 1,377
The role of trace metals in photosynthetic electron transport in O2-evolving organisms
Raven, J. A., Evans, M. C. W., & Korb, R. E. (1999) · Photosynthesis Research · doi:10.1023/a:1006282714942 · Cited by 697
Zaharieva, I., Najafpour, M. M., Wiechen, M., Haumann, M., Kurz, P., & Dau, H. (2011) · Energy & Environmental Science · doi:10.1039/c0ee00815j · Cited by 276
Metadata
- Authors
- Yachandra, V. K., DeRose, V. J., Latimer, M. J., Mukerji, I., Sauer, K., & Klein, M. P.
- Venue
- Science
- Published
- 1993-04-30
- Volume
- 260
- Issue
- 5108
- Pages
- 675-679
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2061911460
- Cited by
- 423
- References
- 0
- FWCI
- 10.49
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yachandra, V. K., DeRose, V. J., Latimer, M. J., Mukerji, I., Sauer, K., & Klein, M. P. (1993). Where Plants Make Oxygen: a Structural Model for the Photosynthetic Oxygen-Evolving Manganese Cluster. Science. https://doi.org/10.1126/science.8480177
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