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Mol Cell Probes. 1991 Feb;5(1):73-80.

IS6110: conservation of sequence in the Mycobacterium tuberculosis complex and its utilization in DNA fingerprinting.

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  • 1Department of Anatomy, University of Arkansas for Medical Sciences, Little Rock.


Multiple copies of an insertion sequence, IS6110, were shown to be present in the genome of members of the Mycobacterium tuberculosis complex (M. tuberculosis and M. bovis). Ten to 12 copies are present in various strains of M. tuberculosis, while strains of M. bovis contain only one to three copies. IS6110 was not detected in the DNA of other species of mycobacteria. Restriction endonuclease analysis indicated that the sequence of IS6110 is conserved across strain and species lines. Hybridization to the insertion sequence can be used to detect restriction fragment length polymorphism reflecting divergence in the sequence of regions flanking the various copies of IS6110. These differences were used to fingerprint various strains of the M. tuberculosis complex.

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