Abstract
Photosystem II (PSII) uses light energy to split water into chemical products that power the planet. The stripped protons contribute to a membrane electrochemical potential before combining with the stripped electrons to make chemical bonds and releasing O2 for powering respiratory metabolisms. In this review, we provide an overview of the kinetics and thermodynamics of water oxidation that highlights the conserved performance of PSIIs across species. We discuss recent advances in our understanding of the site of water oxidation based upon the improved (1.9-Å resolution) atomic structure of the Mn4CaO5 water-oxidizing complex (WOC) within cyanobacterial PSII. We combine these insights with recent knowledge gained from studies of the biogenesis and assembly of the WOC (called photoassembly) to arrive at a proposed chemical mechanism for water oxidation.
| Original language | English |
|---|---|
| Pages (from-to) | 577-606 |
| Number of pages | 30 |
| Journal | Annual Review of Biochemistry |
| Volume | 82 |
| DOIs | |
| Publication status | Published - Jun 2013 |
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Keywords
- Oxygen evolution
- Period-four oscillations
- Photoassembly
- Photoprotection
- Proton-coupled electron transport
- Water oxidation kinetics
- Water oxidation thermodynamics
ASJC Scopus subject areas
- Biochemistry
Cite this
Photosystem II : The reaction center of oxygenic photosynthesis. / Vinyard, David J.; Ananyev, Gennady M.; Dismukes, G Charles.
In: Annual Review of Biochemistry, Vol. 82, 06.2013, p. 577-606.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photosystem II
T2 - The reaction center of oxygenic photosynthesis
AU - Vinyard, David J.
AU - Ananyev, Gennady M.
AU - Dismukes, G Charles
PY - 2013/6
Y1 - 2013/6
N2 - Photosystem II (PSII) uses light energy to split water into chemical products that power the planet. The stripped protons contribute to a membrane electrochemical potential before combining with the stripped electrons to make chemical bonds and releasing O2 for powering respiratory metabolisms. In this review, we provide an overview of the kinetics and thermodynamics of water oxidation that highlights the conserved performance of PSIIs across species. We discuss recent advances in our understanding of the site of water oxidation based upon the improved (1.9-Å resolution) atomic structure of the Mn4CaO5 water-oxidizing complex (WOC) within cyanobacterial PSII. We combine these insights with recent knowledge gained from studies of the biogenesis and assembly of the WOC (called photoassembly) to arrive at a proposed chemical mechanism for water oxidation.
AB - Photosystem II (PSII) uses light energy to split water into chemical products that power the planet. The stripped protons contribute to a membrane electrochemical potential before combining with the stripped electrons to make chemical bonds and releasing O2 for powering respiratory metabolisms. In this review, we provide an overview of the kinetics and thermodynamics of water oxidation that highlights the conserved performance of PSIIs across species. We discuss recent advances in our understanding of the site of water oxidation based upon the improved (1.9-Å resolution) atomic structure of the Mn4CaO5 water-oxidizing complex (WOC) within cyanobacterial PSII. We combine these insights with recent knowledge gained from studies of the biogenesis and assembly of the WOC (called photoassembly) to arrive at a proposed chemical mechanism for water oxidation.
KW - Oxygen evolution
KW - Period-four oscillations
KW - Photoassembly
KW - Photoprotection
KW - Proton-coupled electron transport
KW - Water oxidation kinetics
KW - Water oxidation thermodynamics
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UR - http://www.scopus.com/inward/citedby.url?scp=84878349958&partnerID=8YFLogxK
U2 - 10.1146/annurev-biochem-070511-100425
DO - 10.1146/annurev-biochem-070511-100425
M3 - Article
VL - 82
SP - 577
EP - 606
JO - Annual Review of Biochemistry
JF - Annual Review of Biochemistry
SN - 0066-4154
ER -