Fig. 2From: DLIGAND2: an improved knowledge-based energy function for protein–ligand interactions using the distance-scaled, finite, ideal-gas reference stateComparison between theoretically predicted and experimentally measured protein–ligand binding free energies for 195 complexes on the CASF-2013 testing set for a DLIGAND with a correlation coefficient of 0.526 and b DLIGAND2 with a correlation coefficient of 0.572. The solid line is from the regression fitBack to article page