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Presence of two independent chromosomes in the Brucella melitensis 16M genome.

By S Michaux, J Paillisson, M J Carles-Nurit, G Bourg, A Allardet-Servent and M Ramuz


Mapping the restriction fragments of the Brucella melitensis 16M genome with a new restriction endonuclease, PacI, which cut the DNA into only eight fragments, indicated that this species contains two unique and independent replicons of about 2,100 and 1,150 kb. Pulsed-field gel electrophoresis of intact DNA revealed two bands migrating the expected distances. These replicons were identified as two unique and independent chromosomes by the presence of rRNA operons and genes for heat shock proteins mapping to separate replicons

Topics: Research Article
Year: 1993
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Provided by: PubMed Central
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