Characterization of an inhibitor-resistant enzyme IRT-2 derived from TEM-2 beta-lactamase produced by Proteus mirabilis strains.

Autor: Bret, L., Chanal, C., Sirot, D., Labia, R., Sirot, J.
Zdroj: Journal of Antimicrobial Chemotherapy (JAC); 1996, Vol. 38 Issue 2, p183-191, 9p
Abstrakt: Ten clincial isolates of Proteus mirabilis were found to produce an inhibitor-resistant TEM β-lactamase (IRT) in association with a TEM-1 enzyme. The IRT enzyme was derived from TEM-2. The blaIRT gene differs from blaTEM-2 gene by one point mutation which leads to the amino-acid substitution Arg→Ser at position 244, as observed for the original IRT-2 enzyme derived from TEM-1 reported in Escherichia coli. This is the first report of an IRT β-lactamase derived from TEM-2. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index