Figure 3.

Apparent affinity for the substrate in substrate-dependent rate measurements. Simulations of Eq. 18 for mechanisms with ordered (left) and random (right) binding of the substrate and co-ions. All interaction parameters were set to 1. The dashed lines interpolate the linear regions in the low– and high–co-ion concentration domains. Arrows indicate regions where constants detailed in Table 5 may be extracted from the data. Other terms are defined in Table 1.