Table 3. Overview of the Measured ATP/ADP Ratio, the Measured Equilibrium Composition Ratios Kexp′, Predicted Activity Coefficient Ratios Kγ, and the Resulting Equilibrium Constant Ka′ for Different Initial Substrate Concentrationsa.
mATP,0 [mmol/kgwater] | m3-PG,0 [mmol/kgwater] | ATP/ADP ratio [−] | Kexp′ [−] | Kγ′ [−] | Ka′ [−] |
---|---|---|---|---|---|
1.02 ± 0.01 | 1.03 ± 0.01 | 23.52 ± 0.54 | 559.4 ± 25.9 | 0.9568 | 535.2 ± 24.8 |
2.51 ± 0.01 | 2.52 ± 0.01 | 24.02 ± 0.31 | 578.8 ± 17.3 | 0.8947 | 517.8 ± 15.5 |
5.00 ± 0.01 | 5.01 ± 0.02 | 25.24 ± 0.98 | 640.2 ± 51.0 | 0.8124 | 520.1 ± 41.4 |
10.03 ± 0.03 | 10.02 ± 0.03 | 26.55 ± 0.92 | 705.0 ± 47.3 | 0.6898 | 486.3 ± 32.7 |
19.62 ± 0.01 | 19.70 ± 0.03 | 29.27 ± 1.13 | 854.0 ± 67.6 | 0.5238 | 447.3 ± 35.4 |
MgCl2 was added in a twofold molar excess to the ATP concentration for all samples. All measurements were performed at pH 7 and at a temperature of 313 K.