PMID: 6330497Jan 1, 1984Paper

Translocation of antibiotic resistance markers of a plasmid-free Streptococcus pyogenes (group A) strain into different streptococcal hemolysin plasmids

Molecular & General Genetics : MGG
C Le BouguénecC Dauguet

Abstract

Wild-type strain A454 (Streptococcus pyogenes) transferred en bloc its erythromycin (Em) and tetracycline (Tc) resistance markers into several plasmid-free streptococcal recipients. No plasmid DNA was detected in either the wild-type or the transconjugant strains. Crosses were performed between A454 and S. faecalis Rec+ or Rec- recipients carrying hemolysin-bacteriocin plasmids, pIP964 or pAD1 . The Em Tc-resistant transconjugants obtained harbored either the parental plasmid or an Em Tc resistance plasmid derived from pIP964 or pAD1 . The restriction endonuclease analysis of 12 derivative plasmids showed insertions of various sizes into different fragments of pIP964 or pAD1 . A454 and the Em Tc-resistant plasmid-free transconjugants were found to contain two EcoRI DNA fragments, that shared homology with 32P-labeled pIP1077 , one of the Em Tc resistance derivative plasmids, but not with 32P-labeled pIP964 . No homology was detected between pIP1077 and the cellular DNA of the antibiotic-susceptible recipients.

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Citations

May 1, 1992·Molecular & General Genetics : MGG·R WirthT Horaud
Feb 1, 1990·European Journal of Clinical Microbiology & Infectious Diseases : Official Publication of the European Society of Clinical Microbiology·D B Clewell
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Related Concepts

Bacterial Conjugation
DNA Restriction Enzymes
DNA, Bacterial
Antibiotic Resistance, Microbial
Ilotycin
Hemolysin Factors
Episomes
Bacteria, Flesh-Eating
Tetrabid

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