Distribution of transposons Tn5044 and Tn5070 with noncanonical mer operons in environmental bacterial populations
Autor: | Zh. M. Gorlenko, Mayya Petrova, E. S. Kalyaeva, Sofia Mindlin, I. A. Bass |
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Rok vydání: | 2004 |
Předmět: | |
Zdroj: | Russian Journal of Genetics. 40:1426-1429 |
ISSN: | 1608-3369 1022-7954 |
Popis: | The distribution of unusual mercury resistance transposons, Tn5044 and Tn5070, was examined. A characteristic feature of Tn5044 is temperature sensitivity of its mercury operon and the presence in the mer operon of the gene homologous to RNA polymerase a subunit. Structural organization of mercury operon Tn5070, containing minimum gene set (merRTPA), differs from mer operons of both Gram-negative and Gram-positive bacteria. None of more than two thousand environmental bacterial strains displaying mercury resistance and isolated from the samples selected from different geographical regions hybridized to Tn5040- and Tn5070-specific probes. A concept on the existence of cosmopolite, endemic, and rare transposons in environmental bacterial populations was formulated. |
Databáze: | OpenAIRE |
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