scholarly journals Photochemical tyrosine oxidation with a hydrogen-bonded proton acceptor by bidirectional proton-coupled electron transfer

2012 ◽  
Vol 3 (8) ◽  
pp. 2457 ◽  
Author(s):  
Arturo A. Pizano ◽  
Jay L. Yang ◽  
Daniel G. Nocera
Keyword(s):  
Electron Transfer ◽  
Proton Acceptor ◽  
Proton Coupled Electron Transfer ◽  
Tyrosine Oxidation ◽  
Hydrogen Bonded

Proton-Coupled Electron Transfer in a Hydrogen-Bonded Charge-Transfer Complex

2016 ◽  
Vol 120 (41) ◽  
pp. 10780-10785 ◽  
Author(s):  
Sandeep Verma ◽  
Sunil Aute ◽  
Amitava Das ◽  
Hirendra N. Ghosh
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Proton Coupled Electron Transfer ◽  
Hydrogen Bonded

Diffusive and non-diffusive photo-induced proton coupled electron transfer from hydrogen bonded phenols to meso-tetrakis-5,10,15,20-pentafluorophenyl porphyrin

2014 ◽  
Vol 16 (42) ◽  
pp. 23173-23181 ◽  
Author(s):  
P. Hemant Kumar ◽  
Y. Venkatesh ◽  
S. Prashanthi ◽  
D. Siva ◽  
B. Ramakrishna ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Movement Time ◽  
Proton Coupled Electron Transfer ◽  
Proton Movement ◽  
First Time ◽  
Hydrogen Bonded

Ultrafast photo-induced proton coupled electron transfer is observed for the first time from H-bonded phenols to pentafluorophenyl porphyrin indicating the proton movement time to be 40–60 ps depending on the base used.

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.

Photoinduced Proton-Coupled Electron Transfer of Hydrogen-Bonded p-Nitrophenylphenol–Methylamine Complex in Solution

2012 ◽  
Vol 117 (1) ◽  
pp. 316-325 ◽  
Author(s):  
Chaehyuk Ko ◽  
Brian H. Solis ◽  
Alexander V. Soudackov ◽  
Sharon Hammes-Schiffer
Keyword(s):  
Electron Transfer ◽  
Proton Coupled Electron Transfer ◽  
Hydrogen Bonded

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 Kinetic isotope effect of proton-coupled electron transfer in a hydrogen bonded phenol–pyrrolidino[60]fullerene

2015 ◽  
Vol 14 (12) ◽  
pp. 2147-2150 ◽  
Author(s):  
Janneke Ravensbergen ◽  
Chelsea L. Brown ◽  
Gary F. Moore ◽  
Raoul N. Frese ◽  
Rienk van Grondelle ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Isotope Effect ◽  
Kinetic Isotope Effect ◽  
Proton Coupled Electron Transfer ◽  
Kinetic Isotope ◽  
Hydrogen Bonded

Proton-coupled electron transfer (PCET) plays a central role in photosynthesis and potentially in solar-to-fuel systems.

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
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