A functional model for O-O bond formation by the O2-evolving complex in photosystem II

Julian Limburg; John S. Vrettos; Louise M. Liable-Sands; Arnold L. Rheingold; Robert H. Crabtree; Gary W. Brudvig

doi:10.1126/science.283.5407.1524

A functional model for O-O bond formation by the O₂-evolving complex in photosystem II

Julian Limburg, John S. Vrettos, Louise M. Liable-Sands, Arnold L. Rheingold, Robert H. Crabtree, Gary W. Brudvig

Yale University

Research output: Contribution to journal › Article › peer-review

586 Citations (Scopus)

Abstract

The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are arranged in di-μ-oxo dimanganese units (where μ is a bridging mode). The complex [H₂O(terpy)Mn(O)₂Mn(terpy)OH₂(NO₃)₃ (terpy is 2,2':6',2_-terpyridine), which was synthesized and structurally characterized, contains a di-μ-oxo manganese dimer and catalyzes the conversion of sodium hypochlorite to molecular oxygen. Oxygen-18 isotope labeling showed that water is the source of the oxygen atoms in the molecular oxygen evolved, and so this system is a functional model for photosynthetic water oxidation.

Original language	English
Pages (from-to)	1524-1527
Number of pages	4
Journal	Science
Volume	283
Issue number	5407
DOIs	https://doi.org/10.1126/science.283.5407.1524
Publication status	Published - Mar 5 1999

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@article{15f12eef27ee492880131ab0f0cbdedd,

title = "A functional model for O-O bond formation by the O2-evolving complex in photosystem II",

abstract = "The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are arranged in di-μ-oxo dimanganese units (where μ is a bridging mode). The complex [H2O(terpy)Mn(O)2Mn(terpy)OH2(NO3)3 (terpy is 2,2':6',2-terpyridine), which was synthesized and structurally characterized, contains a di-μ-oxo manganese dimer and catalyzes the conversion of sodium hypochlorite to molecular oxygen. Oxygen-18 isotope labeling showed that water is the source of the oxygen atoms in the molecular oxygen evolved, and so this system is a functional model for photosynthetic water oxidation.",

author = "Julian Limburg and Vrettos, {John S.} and Liable-Sands, {Louise M.} and Rheingold, {Arnold L.} and Crabtree, {Robert H.} and Brudvig, {Gary W.}",

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T1 - A functional model for O-O bond formation by the O2-evolving complex in photosystem II

AU - Limburg, Julian

AU - Vrettos, John S.

AU - Liable-Sands, Louise M.

AU - Rheingold, Arnold L.

AU - Crabtree, Robert H.

AU - Brudvig, Gary W.

PY - 1999/3/5

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N2 - The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are arranged in di-μ-oxo dimanganese units (where μ is a bridging mode). The complex [H2O(terpy)Mn(O)2Mn(terpy)OH2(NO3)3 (terpy is 2,2':6',2-terpyridine), which was synthesized and structurally characterized, contains a di-μ-oxo manganese dimer and catalyzes the conversion of sodium hypochlorite to molecular oxygen. Oxygen-18 isotope labeling showed that water is the source of the oxygen atoms in the molecular oxygen evolved, and so this system is a functional model for photosynthetic water oxidation.

AB - The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are arranged in di-μ-oxo dimanganese units (where μ is a bridging mode). The complex [H2O(terpy)Mn(O)2Mn(terpy)OH2(NO3)3 (terpy is 2,2':6',2-terpyridine), which was synthesized and structurally characterized, contains a di-μ-oxo manganese dimer and catalyzes the conversion of sodium hypochlorite to molecular oxygen. Oxygen-18 isotope labeling showed that water is the source of the oxygen atoms in the molecular oxygen evolved, and so this system is a functional model for photosynthetic water oxidation.

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