Pulsed EPR Studies of the Manganese Center of the Oxygen-Evolving Complex of Photosystem II
The pulsed EPR technique of Electron Spin Echo Envelope Modulation (ESEEM) is used to measure the nuclear transition frequencies of paramagnetic nuclei magnetically coupled to unpaired electron spins.1 We have employed this technique to study the Mn center of the Photosystem II oxygen-evolving complex. ESEEM measurements were performed on the “multiline” Mn EPR signal associated with the S 2 state of the Kok cycle.
KeywordsElectron Spin Echo Envelope Modulation PSII Membrane PSII Preparation Electron Spin Echo Envelope Modulation Spectrum Electron Spin Echo Envelope Modulation Experiment
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