Proton-Coupled Electron Transfer of Tyrosine Oxidation:  Buffer Dependence and Parallel Mechanisms

2007 ◽  
Vol 129 (50) ◽  
pp. 15462-15464 ◽  
Author(s):  
Tania Irebo ◽  
Steven Y. Reece ◽  
Martin Sjödin ◽  
Daniel G. Nocera ◽  
Leif Hammarström
Keyword(s):  
Electron Transfer ◽  
Parallel Mechanisms ◽  
Proton Coupled Electron Transfer ◽  
Tyrosine Oxidation

scholarly journals The mechanism for proton–coupled electron transfer from tyrosine in a model complex and comparisons with Y Z oxidation in photosystem II

2002 ◽  
Vol 357 (1426) ◽  
pp. 1471-1479 ◽  
Author(s):  
Martin Sjödin ◽  
Stenbjörn Styring ◽  
Björn Åkermark ◽  
Licheng Sun ◽  
Leif Hammarström
Keyword(s):  
Electron Transfer ◽  
Photosystem Ii ◽  
Water Oxidation ◽  
Oxidation Mechanism ◽  
Model System ◽  
Proton Coupled Electron Transfer ◽  
Tyrosine Oxidation ◽  
Model Complex ◽  
Primary Donor ◽  
Mn Cluster

In the water–oxidizing reactions of photosystem II (PSII), a tyrosine residue plays a key part as an intermediate electron–transfer reactant between the primary donor chlorophylls (the pigment P 680 ) and the water–oxidizing Mn cluster. The tyrosine is deprotonated upon oxidation, and the coupling between the proton reaction and electron transfer is of great mechanistic importance for the understanding of the water–oxidation mechanism. Within a programme on artificial photosynthesis, we have made and studied the proton–coupled tyrosine oxidation in a model system and been able to draw mechanistic conclusions that we use to interpret the analogous reactions in PSII.

scholarly journals Proton-Coupled Electron Transfer in a Model for Tyrosine Oxidation in Photosystem II

2008 ◽  
Vol 130 (25) ◽  
pp. 8108-8108 ◽  
Author(s):  
Claudio Carra ◽  
Nedialka Iordanova ◽  
Sharon Hammes-Schiffer
Keyword(s):  
Electron Transfer ◽  
Photosystem Ii ◽  
Proton Coupled Electron Transfer ◽  
Tyrosine Oxidation

scholarly journals Photochemical Tyrosine Oxidation in the Structurally Well-Defined α3Y Protein: Proton-Coupled Electron Transfer and a Long-Lived Tyrosine Radical

2014 ◽  
Vol 136 (40) ◽  
pp. 14039-14051 ◽  
Author(s):  
Starla D. Glover ◽  
Christine Jorge ◽  
Li Liang ◽  
Kathleen G. Valentine ◽  
Leif Hammarström ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Proton Coupled Electron Transfer ◽  
Tyrosine Oxidation ◽  
Tyrosine Radical

Proton-Coupled Electron Transfer in a Model for Tyrosine Oxidation in Photosystem II

2003 ◽  
Vol 125 (34) ◽  
pp. 10429-10436 ◽  
Author(s):  
Claudio Carra ◽  
Nedialka Iordanova ◽  
Sharon Hammes-Schiffer
Keyword(s):  
Electron Transfer ◽  
Photosystem Ii ◽  
Proton Coupled Electron Transfer ◽  
Tyrosine Oxidation
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