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The Bacteroides conjugative transposon, CTnDOT, is an integrated conjugative element (ICE), found in many human colonic Bacteroides spp. strains. It has a complex regulatory system for both excision from the chromosome and transfer and mobilization into a new host. It was previously shown that a cloned DNA segment encoding the xis2c, xis2d, orf3, and exc genes was required for tetracycline dependent...
A Bacteroides conjugative transposon (CTn), CTn12256, which has an estimated size of more than 150kbp appeared to contain most or all of a previously discovered 65kbp CTn, CTnDOT. To determine whether the integrated CTnDOT was still intact and to identify the element into which CTnDOT had integrated, large segments of CTn12256 were cloned and sequenced. Results of this analysis revealed that an intact...
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