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ASSOCIATED CONTENT
Supporting Information. Figure S1: EPR spectra of g = 4 signals in S2 state and S1 state of the oriented PS II membranes; Figure S2, The orientation dependence of the g = 4 signal at the angle of the external magnetic field relative to the membrane normal
n; Figure S3, The simulated spectrum and the energy block diagram for S = 5/2 spin state using the single-spin model; Figure S4,
The possible orientations of the DX/DY/DZ axes relative to the
Mn4 in the crystal structures; Figure S5, Stereo views of the possible orientations of the DX/DY/DZ axes relative to the ligand fields
on Mn1; Figure S6, The EPR simulations using the weak coupling model (QM/MM) and the strong coupling models; Figure
S7, J dependence of the resonant conditions for the strong coupled
four spin model; Figure S8,(A) The simulated J dependence of
the resonant fields in the strong coupled model at Q-band (34
GHz).
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