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Updated: Aug 26, 2026

The Use of a β-lactamase-based Conductimetric Biosensor Assay to Detect Biomolecular Interactions
Published on: February 1, 2018
Penicillin-derived inhibitors that simultaneously target both metallo- and serine-beta-lactamases
John D Buynak1, Hansong Chen, Lakshminaryana Vogeti
1Department of Chemistry, Southern Methodist University, Dallas, TX 75275-0314, USA. jbuynak@mail.smu.edu
Abstract:
The synthesis and beta-lactamase inhibitory activity of four 6-(mercaptomethyl)penicillinates and the four corresponding 6-(hydroxymethyl)penicillinates are described. These penicillins include both C6 stereoisomers as well as the sulfide and sulfone oxidation states of the penam thiazolidine sulfur. All compounds were evaluated as inhibitors of representative metallo- and serine-beta-lactamases enzymes. Selected (mercaptomethyl)penicillinates are shown to inactivate both metallo- and serine-beta-lactamases and to display synergism with piperacillin against beta-lactamase producing strains.
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