Dynamic Combinatorial Mass Spectrometry Leads to Metallo-β-lactamase Inhibitors

Abstract
The use of protein ESI mass spectrometry under non-denaturing conditions to analyze a dynamic combinatorial library of thiols/disulfides with the BcII metallo-beta-lactamase enabled the rapid identification of an inhibitor with a K(i) of < 1 microM. The study exemplifies the utility of protein-MS for screening dynamic mixtures of potential enzyme-inhibitors.