The V(D)J recombination/DNA repair factor Artemis belongs to the metallo-beta-lactamase (beta-Lact) superfamily of enzymes. Three regions can be defined within the Artemis protein sequence: (a) the beta-Lact homology domain, to which is appended (b) the beta-CASP region, specific of members of the beta-Lact superfamily acting on nucleic acids, and (c) the COOH-terminal domain. Using in vitro mu...

Infection by Pseudomonas aeruginosa has spread worldwide, with limited options for treatment. The purpose of this study was to investigate metallo-β-lactamase-producing P. aeruginosa strains and compare their genetic profile using samples collected from patients in intensive care units. Forty P. aeruginosa strains were isolated from two public hospitals in Campo Grande, Mato Grosso do Sul State...

A clinical isolate of Serratia marcescens (FHSM4055) was highly resistant to carbapenem (MIC of imipenem, 100 mg/L) and was atypical in that it was negative in the aesculin-hydrolysis test. This parent strain was compared with the revertants S1 and S5, which had lost resistance to imipenem alone and to imipenem and piperacillin respectively. The MICs of imipenem for the revertants were 16- to 3...