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Title

MiniUIB, a novel Minitransposon-Based system for stable insertion of foreign DNA into the genomes of Gram-negative and Gram-positive bacteria

AuthorsChristie-Oleza, Joseph Alexander; Brunet-Galmés, Isabel; Lalucat, Jorge ; Nogales, Balbina; Bosch, Rafael
Issue Date2013
PublisherAmerican Society for Microbiology
CitationApplied and Environmental Microbiology 79(5): 1629-1638 (2013)
AbstractTransposition of the insertion sequence (IS) ISPpu12 is actively induced after conjugative interaction. The transposase of this IS can act in trans on structures flanked by inverted repeats similar to those of the transposon. Based on that fact, an ISPpu12-based minitransposon, miniUIB, has been constructed in order to biotechnologically exploit the self-regulation of ISPpu12 and its increased activity after conjugative interaction. Mobilization of the miniUIB structure into the genome of Pseudomonas stutzeri AN10 after conjugative interaction was demonstrated. A single gene, i.e., the kanamycin resistance determinant, or large genetic structures of >12 kb, i.e., alkBFGHJKL and alkST operons of Pseudomonas putida TF4-1L (GPo1), have been easily integrated in P. stutzeri AN10 by an RP4-based delivery system. Therefore, the integration of the alk determinants by use of the miniUIB system has extended the biodegradation capabilities of this strain. Plasmid pJOC100, containing the transposase and regulator genes of ISPpu12 adjacent to the miniUIB structure, was constructed in order to extend the host range of this biotechnologically useful genetic tool to other model and real-world bacteria. The effectiveness of the system for random mutagenesis in a phylogenetic wide range of bacteria and for the insertion of novel functions has been demonstrated, even in successive steps. © 2013, American Society for Microbiology.
URIhttp://hdl.handle.net/10261/97777
DOI10.1128/AEM.03214-12
Identifiersdoi: 10.1128/AEM.03214-12
issn: 0099-2240
Appears in Collections:(IMEDEA) Artículos
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