Abstract
A sequence of deoxyribonucleic acid of 2.7 times 10-6 to 3.3 times 10-6 daltons which includes the TEM beta-lactamase gene is present on the small plasmid RSF 1030 (R-Amp). This same sequence is present on plasmid derivatives that have received a translocation of deoxyribonucleic acid specifying the TEM beta-lactamase and is also present on naturally occurring plasmids of the F1, F11, N, X, O, I, C, and W incompatibility groups that do not specify ampicillin resistance or specify O-type beta-lactamases.
MeSH Terms
Ampicillin/pharmacology
Base Sequence
Centrifugation, Density Gradient
DNA, Bacterial/analysis
Escherichia coli/drug effects,enzymology
Extrachromosomal Inheritance
Genes
Microscopy, Electron
Molecular Weight
Nucleic Acid Hybridization
Penicillin G/pharmacology
Penicillin Resistance
Penicillinase/biosynthesis
Thymine
Chemicals
DNA, Bacterial
Ampicillin
Penicillinase
Penicillin G
Thymine
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Heffron F
Sublett R
Hedges R W
Jacob A
Falkow S
References (30)
30 references, click to expand
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