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J Microbiol Methods. 2010 Sep;82(3):296-300. doi: 10.1016/j.mimet.2010.07.002. Epub 2010 Jul 16.

Mini-Tn7 vectors as genetic tools for single copy gene cloning in Acinetobacter baumannii.

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Faculty of Health Sciences, University of Ontario Institute of Technology, Oshawa, Ontario, Canada.


Acinetobacter baumannii is an emerging pathogen that causes serious infections with high mortality rates in immunocompromised individuals. Genetic manipulations in this medically-relevant pathogen are limited by the paucity of molecular tools. In this study, we show the application of the mini-Tn7-based single copy insertion system in A. baumannii. Mini-Tn7 elements are known to integrate at a naturally evolved, therefore presumably neutral location (intergenic region) downstream of the glmS gene (glucosamine-fructose-6-phosphate aminotransferase) in Gram-negative bacteria. We identified the site of insertion of mini-Tn7 in A. baumannii and demonstrated application of this useful cloning tool by inserting the gfp gene into the chromosome. Our work shows that mini-Tn7 elements are useful tools for genetic studies in this important pathogen.

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