Table 1. The effect of input data accuracy on parameter values.
The experimental data for β-lactamase were used to generate the Equilibrium Model parameters as described in the Experimental section. Changes were then made to the experimentally determined enzyme concentration to determine the dependence of the fitted constants on the accuracy of the protein concentration. Parameter values are ±S.D.
| Parameter | Determined [E0] | [E0] reduced 2-fold | [E0] reduced 5-fold | [E0] reduced 10-fold |
|---|---|---|---|---|
| ΔG‡cat (kJ·mol−1) | 68.9±0.01 | 67.1±0.01 | 64.8±0.01 | 63.0±0.01 |
| ΔG‡inact (kJ·mol−1) | 93.7±0.08 | 93.6±0.07 | 93.4±0.07 | 93.4±0.07 |
| ΔHeq (kJ·mol−1) | 138.2±1.1 | 139.4±1.1 | 140.2±1.1 | 144.2±1.1 |
| Teq (K) | 325.6±0.1 | 326.2±0.1 | 327.0±0.1 | 327.6±0.1 |
| [E0] (M) | 5.5×10−9 | 2.75×10−9 | 1.1×10−9 | 0.55×10−9 |