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Plasmid. 1993 Nov;30(3):303-8.

Molecular characterization of an aberrant mercury resistance transposable element from an environmental Acinetobacter strain.

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  • 1Institute of Molecular Genetics, Russian Academy of Sciences, Moscow.

Abstract

We present the complete nucleotide sequence of a mer operon located on a 60-kb conjugative plasmid pKLH2 from an environmental bacterium, Acinetobacter calcoaceticus, isolated from a mercury mine. The pKLH2 mer operon has essentially the same gene organization as that of Tn21 and Tn501 from clinical bacteria. The pKLH2 mer operon nucleotide sequence shows 85.5% identity with the Tn501 and 80.9% identity with the Tn21 sequences. Vestigial sequences have been found at the ends of the pKLH2 mer operon, indicating that the pKLH2 mer operon was once a part of a Tn21-like transposon, which had committed suicide by an aberrant resolution event.

PMID:
8302940
[PubMed - indexed for MEDLINE]
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