Resistance of Escherichia coli to penicillins: fine-structure mapping and dominance of chromosomal beta-lactamase mutations.

Seven Escherichia coli K-12 mutants with a lowered chromosomal beta-lactamase activity were analyzed genetically. The beta-lactamase-negative mutants isolated from ampA1-carrying strains (resistant to 10 microgram of ampicillin per ml) all carried genetic lesions very close to the ampA1 mutation, wh...

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Veröffentlicht in:	J Bacteriol
Hauptverfasser:	Normark, S, Burman, L G
Format:	Artigo
Sprache:	Inglês
Veröffentlicht:	American Society for Microbiology (ASM) 1977
Schlagworte:	Research Article
Online-Zugang:	https://ncbi.nlm.nih.govhttps://pmc.ncbi.nlm.nih.gov/articles/PMC221818/ https://ncbi.nlm.nih.govhttps://pubmed.ncbi.nlm.nih.gov/334718/ https://ncbi.nlm.nih.govhttps://doi.org/10.1128/jb.132.1.1-7.1977
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