A model for the water-oxidation and recovery systems of the oxygen-evolving complex

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Abstract

We propose a model for the water-oxidation and recovery systems of the oxygen-evolving complex (OEC) of the photosystem II (PSII) enzyme. The whole system is constructed from two catalytic cycles, conducted as a tandem reaction: (i) a water-oxidation loop uses cerium(iv) ammonium nitrate as an oxidant to activate a dimanganese complex for water-oxidation and thereby liberate a molecule of O2 and (ii) a recovery loop begins with photoinhibition of the dimanganese complex but then uses O2 to reactivate the manganese centre. The net result is a catalytic water-oxidation catalyst that can use self-generated O2 for recovery.

Original languageEnglish
Pages (from-to)3063-3071
Number of pages9
JournalDalton Transactions
Volume43
Issue number8
DOIs
Publication statusPublished - Feb 28 2014

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Oxygen
Recovery
Oxidation
Water
Cerium
Photosystem II Protein Complex
Manganese
Oxidants
Catalysts
Molecules
Enzymes
ammonium nitrate

All Science Journal Classification (ASJC) codes

  • Inorganic Chemistry

Cite this

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title = "A model for the water-oxidation and recovery systems of the oxygen-evolving complex",
abstract = "We propose a model for the water-oxidation and recovery systems of the oxygen-evolving complex (OEC) of the photosystem II (PSII) enzyme. The whole system is constructed from two catalytic cycles, conducted as a tandem reaction: (i) a water-oxidation loop uses cerium(iv) ammonium nitrate as an oxidant to activate a dimanganese complex for water-oxidation and thereby liberate a molecule of O2 and (ii) a recovery loop begins with photoinhibition of the dimanganese complex but then uses O2 to reactivate the manganese centre. The net result is a catalytic water-oxidation catalyst that can use self-generated O2 for recovery.",
author = "Takeshi Yatabe and Mitsuhiro Kikkawa and Takahiro Matsumoto and Hidetaka Nakai and Kenji Kaneko and Seiji Ogo",
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T1 - A model for the water-oxidation and recovery systems of the oxygen-evolving complex

AU - Yatabe, Takeshi

AU - Kikkawa, Mitsuhiro

AU - Matsumoto, Takahiro

AU - Nakai, Hidetaka

AU - Kaneko, Kenji

AU - Ogo, Seiji

PY - 2014/2/28

Y1 - 2014/2/28

N2 - We propose a model for the water-oxidation and recovery systems of the oxygen-evolving complex (OEC) of the photosystem II (PSII) enzyme. The whole system is constructed from two catalytic cycles, conducted as a tandem reaction: (i) a water-oxidation loop uses cerium(iv) ammonium nitrate as an oxidant to activate a dimanganese complex for water-oxidation and thereby liberate a molecule of O2 and (ii) a recovery loop begins with photoinhibition of the dimanganese complex but then uses O2 to reactivate the manganese centre. The net result is a catalytic water-oxidation catalyst that can use self-generated O2 for recovery.

AB - We propose a model for the water-oxidation and recovery systems of the oxygen-evolving complex (OEC) of the photosystem II (PSII) enzyme. The whole system is constructed from two catalytic cycles, conducted as a tandem reaction: (i) a water-oxidation loop uses cerium(iv) ammonium nitrate as an oxidant to activate a dimanganese complex for water-oxidation and thereby liberate a molecule of O2 and (ii) a recovery loop begins with photoinhibition of the dimanganese complex but then uses O2 to reactivate the manganese centre. The net result is a catalytic water-oxidation catalyst that can use self-generated O2 for recovery.

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