Fig. 3

3D structural representation of the top screened compounds (blue) having interaction with Zn2+ and control compound (orange) within the active site of L1 β-lactamase. Key interacting amino acid residues are shown in deep blue, and the catalytic Zn²⁺ ions are represented in pink. The visualization highlights the binding orientation and molecular interactions of the ligands with the active site residues and metal ions