Electron paramagnetic resonance study of the electron transfer reactions in photosystem II membrane preparations from Arabidopsis thaliana

►Active Photosystem II membrane preparations from Arabidopsis thaliana were isolated. ►Full range of the Photosystem II redox cofactors was investigated by electron paramagnetic resonance (EPR) spectroscopy. ►EPR signals from all S states of the water oxidizing complex were also detected. ►Spectroscopic platform to study PSII reactions in wild type and mutants from Arabidopsis thaliana is created.