Table 1.
Relative Affinities (kcal/mol) of Alcohols with Respect to Water Binding to Wild-Type LUSH Proteina
| butanol | propanol | ethanol | water | |
|---|---|---|---|---|
| B3LYP/B1 | ||||
| gas | −2.54 | −2.90 | −1.76 | 0 |
| solb | 1.57 | 1.06 | 1.44 | 0 |
| B3LYP/B2//B3LYP/B1 | ||||
| gas | −3.65 | −3.48 | −2.10 | 0 |
| solb | 0.18 | 0.39 | 0.73 | 0 |
| M05-2X/B1 | ||||
| gas | 3.83 | 1.56 | 1.42 | 0 |
| solb | 8.30 | 6.43 | 5.35 | 0 |
| M05-2X/B2//M05-2X/B1 | ||||
| gas | 4.20 | 2.15 | 1.79 | 0 |
| solb | 8.43 | 6.91 | 5.43 | 0 |
The model is shown in Figure 2. The energy zero is set to the binding energy of a water molecule to LUSH in a given level of theory. B1 = 6-31G(d), and B2 = 6-31+G(d,p).
SMD solvation model calculations on the gas-phase optimized geometries