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Docking pose of compound 8 (cyan backbone) and compound 9 (salmon backbone) in the active site of AbFabI (PDB ID 4ZJU). (A) The 4-methoxy phenyl in compound 9 clashes with N156 if it maintains a binding pose similar to compound 8. As a result we observe a shift in the binding mode. (B) The shift in binding mode of compound 9 positions it in the unfavorable hydrophobic environment of L100 and I201 which likely explains the weak inhibitory activity of compound 9 in AbFabI.
