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- W2009304056 abstract "We have developed a method for generating transposon insertion mutants using mariner in vitro mutagenesis. The gene of interest was PCR-amplified and cloned. A kanamycin-marked mariner transposon was randomly inserted into the purified plasmid in an in vitro transposition reaction. After repair and propagation in Escherichia coli, purified mutagenized plasmid was introduced into Helicobacter pylori by natural transformation. Transformants were selected by plating on kanamycin. Mutants were predominantly the result of double homologous recombination, and multiple mutants (with insertions in distinct positions) were often obtained. The site of insertion was determined by PCR or sequencing. We have made mutations in known or potential virulence genes, including ureA, hopZ, and vacA, using kanamycin- and kanamycin/lacZ-marked transposons. Colonies carrying a kanamycin/lacZ transposon appeared blue on medium containing the chromogenic agent X-gal, allowing discrimination of mutant and wild-type H. pylori in mixed competition experiments." @default.
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- W2009304056 date "2001-03-01" @default.
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- W2009304056 title "Helicobacter pylori mutagenesis by mariner in vitro transposition" @default.
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- W2009304056 doi "https://doi.org/10.1111/j.1574-695x.2001.tb01554.x" @default.
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