Effects of chloramine on Bacillus subtilis deoxyribonucleic acid
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منابع مشابه
Chloramine mutagenesis in Bacillus subtilis.
Chloramine (which occurs widely as a by-product of sanitary chlorination of water supplies) is shown to be a weak mutagen, when reversion of trpC to trpC in Bacillus subtilis is used as an assay. Some DNA-repair mutants appear to be more sensitive to chloramine, suggesting the involvement of DNA targets in bactericide. The influence of plating media on survival of cells treated with chloramine ...
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Two of eighteen strains of Bacillus subtilis examined contained covalently closed circular duplex deoxyribonucleic acid (DNA) of homogeneous size and buoyant density. Strain ATCC 15841 contained about 16 copies per chromosome of plasmid pPL1, a circular DNA element having a molecular weight of about 4.7 times 10(6) and a buoyant density of 1.700. Strain ATCC 7003 contained about one to two copi...
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Variation in frequencies of transformation mediated by native and single-stranded DNA and its dependence on pH of the medium were investigated. The results indicate that the biological activity of deoxyribonucleic acid (DNA) of both configurations assayed in the presence of ethylenediaminetetraacetic acid (EDTA) increases as the pH of the transformation mixture is lowered from 7.7 to a maximum ...
متن کاملSingle-stranded fraction of deoxyribonucleic acid from Bacillus subtilis.
About 13% of the deoxyribonucleic acid (DNA) of various strains of Bacillus subtilis, independent of the stage of growth or competence for transformation, was rendered acid soluble by endonuclease S1. In a pH 11.2 CsCl gradient, 4% of the untreated DNA banded at the density typical for single-stranded molecules, whereas 9% of the remaining DNA (main band) was sensitive to endonuclease S1. Selec...
متن کاملFate of Transforming Deoxyribonucleic Acid in Bacillus Subtilis.
Venema, G. (Hammersmith Hospital, London, England), R. H. Prtichard, and T. Venema-Schröder. Fate of transforming deoxyribonucleic acid in Bacillus subtilis. J. Bacteriol. 89:1250-1255. 1965.-Donor deoxyribonucleic acid (DNA) introduced into competent recipient cells of Bacillus subtilis undergoes a transient loss of its transforming activity shortly after uptake; transforming activity reappear...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1976
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.125.3.934-945.1976