R-FACTOR MEDIATED -LACTAMASE PRODUCTION BY Free

Abstract

SUMMARY

Production of β-lactamase by 15 strains of has been investigated. All the strains produce a constitutive β-lactamase, which readily hydrolyses penicillin G, ampicillin, and cephaloridine. The β-lactamase produced by these strains is indistinguishable from the type-IIIa enzyme commonly found in strains of . The β-lactamase gene has been transferred from the enzyme-producing strains of to strains of and a strain of .

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/content/journal/jmm/10.1099/00222615-8-3-437
1975-08-01
2024-03-29
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