EPR spectroscopy of the manganese cluster of photosystem II
A Haddy - Photosynthesis research, 2007 - Springer
Electron paramagnetic resonance (EPR) spectroscopy is a valuable tool for understanding
the oxidation state and chemical environment of the Mn 4 Ca cluster of photosystem II. Since …
the oxidation state and chemical environment of the Mn 4 Ca cluster of photosystem II. Since …
Electronic structure of the oxygen-evolving complex in photosystem II prior to OO bond formation
The photosynthetic protein complex photosystem II oxidizes water to molecular oxygen at an
embedded tetramanganese-calcium cluster. Resolving the geometric and electronic …
embedded tetramanganese-calcium cluster. Resolving the geometric and electronic …
A five-coordinate Mn (IV) intermediate in biological water oxidation: spectroscopic signature and a pivot mechanism for water binding
Among the four photo-driven transitions of the water-oxidizing tetramanganese–calcium
cofactor of biological photosynthesis, the second-last step of the catalytic cycle, that is the S2 …
cofactor of biological photosynthesis, the second-last step of the catalytic cycle, that is the S2 …
The S3 State of the Oxygen-Evolving Complex: Overview of Spectroscopy and XFEL Crystallography with a Critical Evaluation of Early-Onset Models for O–O Bond …
DA Pantazis - Inorganics, 2019 - mdpi.com
The catalytic cycle of the oxygen-evolving complex (OEC) of photosystem II (PSII) comprises
five intermediate states S i (i= 0–4), from the most reduced S0 state to the most oxidized S4 …
five intermediate states S i (i= 0–4), from the most reduced S0 state to the most oxidized S4 …
[HTML][HTML] Electron transfer pathways from the S2-states to the S3-states either after a Ca2+/Sr2+ or a Cl−/I− exchange in Photosystem II from Thermosynechococcus …
A Boussac, AW Rutherford, M Sugiura - Biochimica et Biophysica Acta (BBA …, 2015 - Elsevier
The site for water oxidation in Photosystem II (PSII) goes through five sequential oxidation
states (S 0 to S 4) before O 2 is evolved. It consists of a Mn 4 CaO 5-cluster close to a redox …
states (S 0 to S 4) before O 2 is evolved. It consists of a Mn 4 CaO 5-cluster close to a redox …
Evidence of O–O Bond Formation in the Final Metastable S3 State of Nature's Water Oxidizing Complex Implying a Novel Mechanism of Water Oxidation
TA Corry, PJ O'malley - The Journal of Physical Chemistry Letters, 2018 - ACS Publications
A novel mechanism for the final stages of Nature's photosynthetic water oxidation to
molecular oxygen is proposed. This is based on a comparison of experimental and broken …
molecular oxygen is proposed. This is based on a comparison of experimental and broken …
Molecular Identification of a High-Spin Deprotonated Intermediate during the S2 to S3 Transition of Nature's Water-Oxidizing Complex
TA Corry, PJ O'Malley - Journal of the American Chemical Society, 2020 - ACS Publications
The identity of a key intermediate in the S2 to S3 transition of nature's water-oxidizing
complex (WOC) in Photosystem 2 is presented. Broken-symmetry density functional theory …
complex (WOC) in Photosystem 2 is presented. Broken-symmetry density functional theory …
How Nature Makes O2: an Electronic Level Mechanism for Water Oxidation in Photosynthesis
F Rummel, PJ O'Malley - The Journal of Physical Chemistry B, 2022 - ACS Publications
In this paper, we combine broken symmetry density functional calculations and electron
paramagnetic resonance analysis to obtain the electronic structure of the penultimate S3 …
paramagnetic resonance analysis to obtain the electronic structure of the penultimate S3 …
Roles of the Flexible Primary Coordination Sphere of the Mn4CaOx Cluster: What Are the Immediate Decay Products of the S3 State?
The primary coordination sphere of the multinuclear cofactor (Mn4CaO x) in the oxygen-
evolving complex (OEC) of photosystem II is absolutely conserved to maintain its structure …
evolving complex (OEC) of photosystem II is absolutely conserved to maintain its structure …
Q-band EPR of the S2 state of photosystem II confirms an S= 5/2 origin of the X-band g= 4.1 signal
Disagreement has remained about the spin state origin of the g= 4.1 EPR signal observed at
X-band (9GHz) from the S 2 oxidation state of the Mn cluster of Photosystem II. In this study …
X-band (9GHz) from the S 2 oxidation state of the Mn cluster of Photosystem II. In this study …