Figure : Gramicidin: zero point energy-corrected energies of B3LYP/6-31G(d,p) re-optimized structures obtained with SA based on classical force fields (SA/FF), and GAs with AMOEBA and GAFF force fields. The green and shorter red levels are respectively matches and misses compared to SA/FF. The respective number of LM is indicated in parentheses. A similar plot restricted to clearly distinct structures (only LM differing by at least two side chain dihedrals) is provided in Fig. .