Abstract
A minicell-producing strain of Salmonella typhimurium contains two cryptic plasmids. One has a molecular weight of 2.6 x 10(6) to 2.8 x 10(6), is present in multiple copies per cell, and segregates into minicells. The other has a molecular weight of 130 x 10(6), is present in few copies per cell, and probably does not segregate into minicells.
MeSH Terms
Bromides
Centrifugation, Density Gradient
Cesium
Chlorides
DNA, Bacterial/isolation & purification
DNA, Circular/isolation & purification
Ethidium
Extrachromosomal Inheritance
Hydrogen-Ion Concentration
Microscopy, Electron
Molecular Weight
Salmonella typhimurium/analysis,cytology
Thymidine/metabolism
Tritium
Chemicals
Bromides
Chlorides
DNA, Bacterial
DNA, Circular
Tritium
Cesium
Ethidium
Thymidine
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Sheehy R J
Allison D P
Curtiss R
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