TABLE 1.

Bacterial strains and plasmids used in this study

E. coli strain or plasmidDescription
Strains
    408Wild-type ExPEC containing pAPEC-O103-ColBM
    408.1Plasmid-cured derivative of ExPEC 408
    408.2Plasmid-complemented derivative of ExPEC 408.1
    408.3DH5α containing pAPEC-O103-ColBM
    DH5αAvirulent recipient strain
    NMEC RS218Wild-type NMEC positive control
    APEC O1Wild-type APEC positive control
Plasmids
    pAPEC-O103-ColBMColBM virulence plasmid
    pRK2013Mobilization helper plasmid