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Binding of 9 at the endonuclease active site. Ligand is shown in yellow, while the receptor is purple. Chelation is depicted as black dashes, hydrogen bonds are depicted as blue dashes, and strong hydrophobic interactions are gray dashes. The blue mesh around the ligand is calculated from a 4.5σ omit map. The figure was generated using PyMol (www.pymol.org). PDB code: 4KIL.
