| Literature DB >> 23006757 |
Eleanor M Liu1, Kevin M Pegg, Peter Oelschlaeger.
Abstract
Metallo-β-lactamases are important determinants of antibacterial resistance. In this study, we investigate the sequence-activity relationship between the closely related enzymes IMP-1, IMP-6, and IMP-25. While IMP-1 is the more efficient enzyme across the overall spectrum of tested β-lactam antibacterial agents, IMP-6 and IMP-25 seem to have evolved to specifically inactivate the newer carbapenem meropenem. Molecular modeling indicates that the G235S mutation distinguishing IMP-25 from IMP-1 and IMP-6 may affect enzyme activity via Asn233.Entities:
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Year: 2012 PMID: 23006757 PMCID: PMC3497198 DOI: 10.1128/AAC.01440-12
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191