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Article

DNA sequence differences of ampD mutants of Citrobacter freundii.

Antimicrobial agents and chemotherapy - 1 Nov 1995

Stapleton P, Shannon K, Phillips I

Abstract excerpt

Three groups of mutants with increased levels of beta-lactamase synthesis were selected from Citrobacter freundii 382010 by beta-lactam antibiotics at concentrations just above the MIC. Uninduced cultures of the hyperinducible group had 3- to 5-fold more beta-lactamase activity than the parent strain, with one mutant (termed type b) expressing 19 times the activity of the parent strain; the partially derepressed...

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Identifiers

PMID: 8585732
DOI: 10.1128/AAC.39.11.2494
PMCID: PMC162971

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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