Outer membrane protein A (OmpA) contributes to serum resistance and pathogenicity of Escherichia coli K-1.


We examined whether outer membrane protein A (OmpA) contributes to gram-negative pathogenesis by determining the effect of mutagenesis of ompA in a virulent Escherichia coli K-1 isolate. An OmpA mutant was generated by insertion of the transposon TnphoA, which was genetically modified to increase the efficiency of its delivery by conjugation. The mutant was… (More)


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