Tansirichaiya, S;
Mullany, P;
Roberts, AP;
(2016)
PCR-based detection of composite transposons and translocatable units from oral metagenomic DNA.
FEMS Microbiology Letters
, 363
(18)
10.1093/femsle/fnw195.
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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 would also detect TUs, PCR was carried out to detect circular TUs predicted to originate from these composite transposons. We confirmed the presence of two novel TUs, one containing an experimentally proven antiseptic resistance gene and another containing a putative universal stress response protein (UspA) encoding gene. This is the first report of a PCR strategy to amplify the DNA segment on composite transposons and TUs in metagenomic DNA. This can be used to identify AR genes associated with a variety of mobile genetic elements from metagenomes.
| Type: | Article |
|---|---|
| Title: | PCR-based detection of composite transposons and translocatable units from oral metagenomic DNA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/femsle/fnw195 |
| Publisher version: | http://dx.doi.org/10.1093/femsle/fnw195 |
| Language: | English |
| Additional information: | © FEMS 2016. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
| Keywords: | Science & Technology, Life Sciences & Biomedicine, Microbiology, composite transposon, translocatable unit (TU), oral metagenomic DNA, ANTIBIOTIC-RESISTANCE, BACTERIAL, PLASMID, DISEASE, GENES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute > Microbial Diseases |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1508786 |
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