Figure 2.

Branching fraction J_p as a function of the enzyme activity ratio α for the enzyme sequestration strategy (green solid curve), the enzyme co-clustering strategy (orange solid curve) and for a well-mixed system of uniformly distributed enzymes (black curve). The dashed lines show the corresponding approximative forms in the limit [E_P]/c_c,s ≪ 1, equation (2.7). The parameter values are k_p = k_q = 10⁵ M⁻¹ s⁻¹, c_c,s = 25 mM, r_c = r_s = 0.4 μm, and D = 100 μm² s⁻¹. (Inset) The behaviour of the dimensionless function γ(β), introduced in equation (2.7) and defined in equation (2.9). (Online version in colour.)