PCR-based detection of composite transposons and translocatable units from oral metagenomic DNA.

ABSTRACT: A composite transposon is a mobile genetic element consisting of two insertion sequences (ISs) flanking a segment of cargo DNA often containing antibiotic resistance (AR) genes. Composite transposons can move as a discreet unit. There have been recently several reports on a novel mechanism of movement of an IS26-based composite transposon through the formation of a translocatable unit (TU), carrying the internal DNA segment of a composite transposon and one copy of a flanking IS. In this study, we determined the presence of composite transposons and TUs in human oral metagenomic DNA using PCR primers from common IS elements. Analysis of resulting amplicons showed four different IS1216 composite transposons and one IS257 composite transposon in our metagenomic sample. As our PCR strategy wo

SUBMITTER: Tansirichaiya S 

PROVIDER: S-EPMC5024762 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature