For the (Ala) 11 turn, the absolute errors in the total energies for eleven conformers are compared in Fig. . Compared to the α-helical conformers, these absolute errors are significantly smaller, since there are fewer intramolecular interactions. Once two-body contributions are included the absolute errors are below 15 kJ/mol for all conformers, both with eb-MFCC-MBE(2) and with db-MFCC-MBE . While for some conformers, the density-based scheme is able to reduce the error to close to zero, for other conformers it yields errors comparable to or even slightly worse than the energy-based scheme.