First characterization of inhibitor-resistant TEM (IRT) beta-lactamases in Klebsiella pneumoniae strains
- 1 November 1995
- journal article
- Published by American Society for Microbiology in Antimicrobial Agents and Chemotherapy
- Vol. 39 (11) , 2580-2582
- https://doi.org/10.1128/aac.39.11.2580
Abstract
Two clinical strains of Klebsiella pneumoniae, TP 01 and TP 02, presented resistance to amoxicillin-clavulanate and were fully susceptible to cephalothin. These strains produced two beta-lactamases, SHV-1 and a TEM enzyme with a pI of 5.2. The previously described changes Arg-244-->Cys and Arg-244-->Ser in IRT-1 and IRT-2 (A. Belaaouaj, C. Lapoumeroulie, M. M. Caniça, G. Vedel, P. Nevot, R. Krishnamoorthy, and G. Paul, FEMS Microbiol. Lett. 120:75-80, 1994) were found in TEM enzymes from the TP 01 and TP 02 strains, respectively. This is the first report of inhibitor-resistant TEM (IRT) in species other than Escherichia coli from the family Enterobacteriaceae.Keywords
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