DNA structure properties and phospholipid composition of Salmonella derby

The properties of DNA structure and the phospholipid content of Salmonella derby cells were studied with respect to their plasmid content and radiosensitivity. The role of R-plasmid in determining the qualitative and quantitative compositions of S. derby phospholipids was revealed. The radiosensitiv...

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Bibliographic Details
Published inMembrane & cell biology Vol. 11; no. 5; p. 623
Main Authors Balayan, M A, Vardevanyan, P O, Pepoyan, A Z, Minasbekyan, L A, Parsadanyan, M A, Karagezyan, K G
Format Journal Article
LanguageEnglish
Published Switzerland 1998
Subjects
DNA Methylation
DNA, Bacterial - chemistry
DNA, Bacterial - isolation & purification
Nucleic Acid Denaturation
Phospholipids - analysis
Plasmids - chemistry
Plasmids - isolation & purification
R Factors - chemistry
Radiation Tolerance
Salmonella - chemistry
Salmonella - genetics
Salmonella - radiation effects
Species Specificity
Thermodynamics
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Summary:The properties of DNA structure and the phospholipid content of Salmonella derby cells were studied with respect to their plasmid content and radiosensitivity. The role of R-plasmid in determining the qualitative and quantitative compositions of S. derby phospholipids was revealed. The radiosensitivity of plasmid-carrying S. derby mutants was shown to be most likely determined by the structure of DNA, its GC content, and the level of methylation. We suggest that the phospholipid molecules and their interaction with DNA play a key role in formation of the radio-resistance of plasmid-free S. derby cells.
ISSN:1023-6597