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Genetic and biochemical characterization of a novel metallo-?-lactamase, TMB-1, from an Achromobacter xylosoxidans strain isolated in Tripoli, Libya.

ABSTRACT: An Achromobacter xylosoxidans strain from the Tripoli central hospital produced a unique metallo-?-lactamase, designated TMB-1, which is related to DIM-1 (62%) and GIM-1 (51%). bla(TMB-1) was embedded in a class 1 integron and located on the chromosome. The TMB-1 ?-lactamase has lower k(cat) values than both DIM-1 and GIM-1 with cephalosporins and carbapenems. The K(m) values were more similar to those of GIM-1 than those of DIM-1, with the overall k(cat)/K(m) values being lower than those for GIM-1 and DIM-1.

SUBMITTER: El Salabi A

PROVIDER: S-EPMC3346670 | biostudies-literature | 2012 May

REPOSITORIES: biostudies-literature

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Genetic and biochemical characterization of a novel metallo-β-lactamase, TMB-1, from an Achromobacter xylosoxidans strain isolated in Tripoli, Libya.

El Salabi Allaaeddin A Borra Pardha Saradhi PS Toleman Mark A MA Samuelsen Ørjan Ø Walsh Timothy R TR

Antimicrobial agents and chemotherapy 20120130 5

An Achromobacter xylosoxidans strain from the Tripoli central hospital produced a unique metallo-β-lactamase, designated TMB-1, which is related to DIM-1 (62%) and GIM-1 (51%). bla(TMB-1) was embedded in a class 1 integron and located on the chromosome. The TMB-1 β-lactamase has lower k(cat) values than both DIM-1 and GIM-1 with cephalosporins and carbapenems. The K(m) values were more similar to those of GIM-1 than those of DIM-1, with the overall k(cat)/K(m) values being lower than those for G ...[more]

PMID: 22290947

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