Next, we turn to the models of polypeptides solvated in water, and again compare the local-mode frequencies predicted by the Jansen, Skinner, and Tokmakoff maps to reference values extracted from quantum-chemical calculations. Note that because in the quantum-chemical calculations, the solvent water molecules are described as point charges, the electrostatics of the solvent are described consistently in both the quantum-chemical calculations and when applying the vibrational maps. for each of the test cases are given in Table .