1887

Abstract

Summary: Two β-lactamase genes present in the chromosome of have been cloned individually into the plasmid pACY184 and expressed in . The gene for broad-spectrum β-lactamase I (‘A’) was cloned from a strain belonging to the O:3 serotype, and the gene for (cephalosporinase) β-lactomase II (‘B’) was cloned from a strain of the O:5b serotype. The properties of the β-lactamases expressed in are similar to those previously described in .

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1991-01-01
2021-05-09
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