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. Author manuscript; available in PMC: 2012 Aug 13.
Published in final edited form as: J Am Chem Soc. 2010 Jan 20;132(2):446–447. doi: 10.1021/ja908688t

Figure 1.

Figure 1

Q-band Mims ENDOR spectra (black) of (A) 13C-1; (B) α-13C-Ala PSII; (C) 13C-PSII. Experimental parameters: νMW = 33.9 GHz; B0 = 1218–1220 mT; selected τ values from 180 to 300 ns were used (see SI); t(π/2) = 20 ns; t(πRF) = 64 μs; T = 12 K (13C-1) and 5 K (PSII). Simulation (blue) parameters for 13C-1 spectrum: Ãdip = [−2.5, −0.8, 3.2]; Aiso = −1.0 MHz; line-width 0.2 MHz.