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Figure 2
Concentration profiles derived from simulations that mimic the reaction of the blue-light photoreceptor PYP. Fractional concentrations C/C0 are plotted as a function of log t. Concentrations of intermediates I1 to I3 are represented by blue, green and yellow lines, respectively. The concentration of the dark state is represented by the red line. (a) The irreversible sequential mechanism with well separated profile peaks. (b) The irreversible sequential mechanism with overlapping concentration profiles. (c) The dead-end mechanism with separated profile peaks. (d) The dead-end mechanism with overlapping concentration profiles. The RRCs for each simulation are summarized in Table 2[link]. A schematic representation of the irreversible sequential mechanism is shown in Fig. 1[link](b), and the dead-end mechanism is presented in Fig. 1[link](c).

IUCrJ
Volume 11| Part 3| May 2024| Pages 405-422
ISSN: 2052-2525
https://doi.org/10.1107/S2052252524002392