Table 1.

Bacterial strains used

StrainGenotypeReference or source
E. coliK-12
 DH5αendA1hsdR17(rKmK)supE44thi-1 recA1 gyrA relA1Δ(lacZYA-argF)U169 deoR80 dlacΔ(lacZM15)]15
 S17-1 λpirprp thi recA hsdR; chromosomal RP4-2 (Tn1::ISR1 tet::Mu Km::Tn7); λpir33
 AB2847aroB malT tsx thi17
 H5058aroB malT tsx thi cir fiu fepAK. Hantke
S. enterica serotype Typhimurium
 14028Wild type (isolated from bovine septicemia)American Type Culture Collection
 CL150914028aroA::Tn108
 AR125814028entB::MudJ38
 IR71514028 Nalr35
 AJB2014028 NalriroBC::Kmr5
 AIR4914028 NalriroBC::KmraroA::Tn10This study
 AJB5214028 NalriroN::pGP704This study
 AJB6414028 NalriroN::pGP704aroA::Tn10This study
S. enterica serotype Typhi
 AJB70Wild type (clinical isolate, San Diego, Calif.)5
 TY21agalE viaB rpoS14
 AJB22TY21a Nalr5
 AJB54TY21a NalriroN::pGP704This study