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Polynucleotide Homologies of Brucella Deoxyribonucleic Acids

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Journal J Bacteriol
Specialty Microbiology
Date 1968 Feb 1
PMID 4966546
Citations 20
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Abstract

Deoxyribonucleic acids (DNA's) extracted from organisms presently placed in the genus Brucella (B. abortus, B. melitensis, B. neotomae, and B. suis) possessed very similar polynucleotide sequences. Unlabeled, single-stranded DNA fragments from B. abortus, B. melitensis, B. neotomae, and B. suis were equally effective in competing with the interaction of corresponding radiolabeled, single-stranded DNA fragments with their homologous DNA-agars. Unlabeled fragments of B. ovis, however, did not compete as effectively as the homologous, unlabeled DNA's, and this organism, therefore, had a detectably different polynucleotide composition. The mole percentages of guanine plus cytosine in Brucella DNA's (56 to 58%) were also similar. DNA's from Francisella tularensis, Escherichia coli, and the slow loris did not compete.

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