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Binding disposition of the co-crystallized ligand (cyan-colored) and the docked compound 4k (orange-colored) towards (A): VEGFR2 (PDB = 3U6J); (B): Topoisomerase II (PDB = 1ZXM). Left panel is the surface representation, while right panel is the interactive binding mode with the key amino acids. The 3D representation was generated by Chimera-UCSF.
