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Mechanism for photosynthetic O2 evolution.
Open accessAbstract
We present a mechanism for photosynthetic O2 evolution based on a structural conversion of a Mn4O6 "adamantane"-like complex to a Mn4O4 "cubane"-like complex. EPR spectral data obtained from the S2 state of the O2-evolving complex are characteristic of a Mn4O4 cubane-like structure. Based on this structure for the manganese complex in the S2 state as well as a consideration of the other evidence available on the natural system and the coordination chemistry of manganese, structures are proposed for the five intermediate oxidation states of the manganese complex. A molecular mechanism for the formation of an O--O bond and the displacement of O2 from the S4 state is easily accommodated by the proposed model. The model is discussed in terms of recent EPR, x-ray, and UV spectral data obtained from the manganese site in the photosynthetic O2-evolving complex.
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Cited by
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Functional models for the oxygen-evolving complex of photosystem II
Cady, C. W., Crabtree, R. H., & Brudvig, G. W. (2008) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2007.06.002 · Cited by 403
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Metadata
- Authors
- Brudvig, G. W., & Crabtree, R. H.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 1986-07
- Volume
- 83
- Issue
- 13
- Pages
- 4586-4588
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W2084479814
- Cited by
- 164
- References
- 0
- FWCI
- 4.56
- Type
- journal article
- Language
- en
- Open access
- green
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- Brudvig, G. W., & Crabtree, R. H. (1986). Mechanism for photosynthetic O2 evolution. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.83.13.4586
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