Figure 3: Mode of action of serine-β-lactamases and binding mode of cyclic boronates.

(a) Outline mode of action of SBLs. (b) View from a structure obtained by co-crystallization of 1 with OXA-10 (Chain A) revealing the binding mode of cyclic boronates to SBLs. (c) The overlay compares the binding modes of 1 and hydrolysed benzylpenicillin in complex with OXA-10 (PDB ID: 2WGI).