Development of a mariner-based transposon and identification of Listeria monocytogenes determinants, including the peptidyl-prolyl isomerase PrsA2, that contribute to its hemolytic phenotype.

Abstract excerpt

Listeriolysin O (LLO) is a pore-forming toxin that mediates phagosomal escape and cell-to-cell spread of the intracellular pathogen Listeria monocytogenes. In order to identify factors that control the production, activity, or secretion of this essential virulence factor, we constructed a Himar1 mariner transposon delivery system and screened 50,000 mutants for a hypohemolytic phenotype on blood agar plates....

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