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dc.contributor.authorChristie-Oleza, Joseph Alexander-
dc.contributor.authorLanfranconi, Mariana P.-
dc.contributor.authorNogales, Balbina-
dc.contributor.authorLalucat, Jorge-
dc.contributor.authorBosch, Rafael-
dc.identifierdoi: 10.1128/JB.01071-08-
dc.identifierissn: 0021-9193-
dc.identifier.citationJournal of Bacteriology 191(4): 1239-1247 (2009)-
dc.description.abstractISPst9 is an ISL3-like insertion sequence (IS) that was recently described in the naphthalene-degrading organism Pseudomonas stutzeri strain AN10. In this paper we describe a novel strong IS regulation stimulus; transposition of ISPst9 is induced in all P. stutzeri AN10 cells after conjugative interaction with Escherichia coli. Thus, we observed that in all P. stutzeri AN10 cells that received genetic material by conjugation the ISPst9 genomic dose and/or distribution was changed. Furthermore, ISPst9 transposition was also observed when P. stutzeri AN10 cells were put in contact with the plasmidless conjugative strain E. coli S17-1λpir but not when they were put in contact with E. coli DH5α (a nonconjugative strain). The mechanism of ISPst9 transposition was analyzed, and transposition was shown to proceed by excision from the donor DNA using a conservative mechanism, which generated 3- to 10-bp deletions of the flanking DNA. Our results indicate that ISPst9 transposes, forming double-stranded DNA circular intermediates consisting of the IS and a 5-bp intervening DNA sequence probably derived from the ISPst9 flanking regions. The kinetics of IS circle formation are also described. © 2009, American Society for Microbiology. All Rights Reserved-
dc.description.sponsorshipFunds were obtained from project CTM2005-01783 from the M.E.C. (with FEDER cofunding) and from project PRIB2004-10152 from C.A.I.B.-
dc.publisherAmerican Society for Microbiology-
dc.titleInteraction with conjugative pilli induces transposition of ISPst9 in Pseudomonas stutzeri AN10-
dc.description.versionPeer Reviewed-
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