Figure 2.

Crystal structure of LasB in complex with 4b (PDB code: 8CC4). (A) Cartoon representation of LasB (slate) in complex with 4b (gray), with the S1′ and S2′ binding-sites of the enzyme occupied by the compound highlighted. The gray isomesh represents a polder map of 4b contoured at 3 σ. (B) Schematic 2D representation of LasB-4b interactions. Hydrogen bonds are displayed in dotted green lines, while all other residues exhibit hydrophobic interactions with the ligand. The active site Zn²⁺ cation is shown as a gray sphere.