Figure 5.

Stochastic bifurcation plot of the fractional steady-state values of activated kinase, n/N_t from Eq. 22, as a function of the volume V. The solid curves represent the maxima of the steady-state distribution, and the dashed curve represents the minimum of the distribution. Parameter values, ${\widehat{k}}_1=5$, ${\widehat{k}}_{-1}=10$, k₂ = 10, E_t = 30, and k₋₂ = 0.2. The dashed line intersects the zero axis at V = 1.67, beyond which there is only one nonzero maximum in agreement with the range from Eq. 24.