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. Author manuscript; available in PMC: 2011 Mar 18.
Published in final edited form as: J Biol Chem. 2007 Jul 5;282(35):25831–25841. doi: 10.1074/jbc.M702333200

FIGURE 2. X-band (9.7 GHz) and S-band (3.4 GHz) three-pulse ESEEM spectra of 14N region (sample at natural abundance).

FIGURE 2

Spectra for the SQ in the Qi-site of the bc1 complex generated after Fourier transformation of the echo envelope from the time to the frequency domain. The echo envelope was obtained by varying the time, T, between the second and third microwave pulses. The spectra were recorded with time τ = 104 ns (X-band) and 216 ns (S-band) between first and second microwave pulses, at temperature 90 K. Magnetic field strength was 354.2 mT in the X-band experiment, and 121.9 mT in the S-band experiment.