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. Author manuscript; available in PMC: 2012 May 10.
Published in final edited form as: J Am Chem Soc. 2011 Apr 14;133(18):6968–6977. doi: 10.1021/ja107052p

Figure 6.

Figure 6

Time-dependence of the EPR amplitude of the cob(II)alamin-substrate radical pair state in EAL in the cryosolvent system at T=245 K, following temperature-step initiation of reaction. The amplitude is given by the difference between the first peak and second trough amplitudes, as shown in Figure 5B. The intermittent irradiation protocol is denoted, as follows: Arrows represent incubation periods under illumination, and lines represent dark incubation periods. The experimental data points are overlaid with the best-fit exponential growth function (solid curve; kobs= 1.53×10−3 s−1). EPR conditions are as described in the legend to Figure 5.