Reproducing the ligand/receptor complex found in PDB 3PL7. (a) Coarse fragmentation of the ligand. (b) Ligand chain with connected pieces. (c) Binding site of the receptor segmented into 3 pieces to make 3D printing possible on a small platform. (d) Ligand/receptor at native torsion angles and orientation. (e) Magnified view of d. (f) Non-native setting of one of the torsion angles. (g) Wrong orientation of ligand relative to the receptor.