Figure 4From: An ant colony optimisation algorithm for the 2D and 3D hydrophobic polar protein folding problemThe 2D native state of the standard Sequence S1-8. The native conformation of Sequence S1-8 from Table 1 (64 amino acids; energy -42), found by ACO-HPPFP-3 in an average CPU time of 1.5 hours and by PERM in t1 = t2 = t exp = 78 hours.Back to article page