Fig. 2

Figure showing the various types of bonds and amino acids that take part in the interaction between the 4 best selected ligands (a bellidifolin, b naringenin, c apigenin, d coptisine) and their receptor, AChE. Interacting amino acid residues of target molecule are labeled in the diagram and dotted lines depict the interaction between the ligand and receptor. Green dotted lines—conventional bond; deep pink—Pi-Pi stacked bond; and orange—charge-charge interaction