Figure 4.
Surface electrostatic representation of the X-ray crystal structures of Mab PurC in complex with (a) compound 19 (PDB code 6YYA), (b) compound 24 (PDB code 6YYB), (c) compound 27 (PDB code 6YYD), and (d) compound 28 (PDB code 6YYC) with the side chain and key interactions within the active sites illustrated beside each figure. The ligands are shown as a yellow stick model with the respective electron density map (|Fo| – |Fc| omit map) contoured at 2.0σ presented in gray mesh. The interacting amino acids are shown in a gray line representation.