Figure 2 in Assessment of melatonin-alpha adrenergic receptor complexes by molecular docking analysis

Figure 2. Two-dimensional schematic diagrams of the intermolecular interactions in the complexes between ligand melatonin and alpha-2A adrenergic receptor 6kux (A) and 6kuy (B). The ligand melatonin is positioned in the center of the diagrams and its nitrogen, oxygen and carbon atoms are indicated in blue, red and black spheres, respectively, connected to each other by solid blue lines. The amino acids Asp113 and Ser204 of the active binding sites of the receptor proteins are indicated by nitrogen, oxygen and carbon atoms represented as blue, red and black spheres, respectively, connected to each other by solid yellow lines. Hydrogen bonding interactions in the ligand-receptor complexes are represented in green dashed lines with their respective distances in angstroms Å. Hydrophobic contacts are represented in red arcs with spokes radiating towards the ligand atoms they contact, and the contacted atoms are shown with spokes radiating back.