Table 1.

Bacterial strains and plasmids used in this study

Strain or plasmidRelevant characteristicsSource or reference
S. entericaserotype Typhimurium strains
 ATCC 14028Wild typeATCCa
 AR1258ATCC 14028,entB44
 RK804AR1258,tonB18
 RK809AR1258,foxA::pMAPThis study
 enb-7LT2, class II ent mutant33
 WR1024enb-7, fhuB::MudJLaboratory stock
 SL1344hisG4617
 SL1344/nrSL1344, NalrThis study
 BK102SL1344/nr, foxAThis study
 TMLWild type12
 TML/nrTML, NalrThis study
 RK102TML/nr,foxAThis study
E. coliSM10λpirFthi-1 thr-1 leuB6 supE44 tonA21 lacY1 recA::RP4-2-tc::Mu KmrR. Haigh
Plasmids
 pUC18ColE1,blaLaboratory stock
 pRA17pUC18 carrying the 287-bp foxA fragmentThis study
 pRA5pUC18 carrying the foxA 5′ regionThis study
 pBluescriptSKColE1, blaLaboratory stock
 pRA19pBluescriptSK carrying the mutated 287-bpfoxA fragmentThis study
 pRDH10sacRB cat oriR6K mobRP4, TetrR. Haigh
 pRA21pRDH10 carrying the 287-bp foxAfragmentThis study
 pIRS618pSUKS1 carrying the serovar Typhimurium tonB gene45
 pMAPbla oriR6KmobRP444
  • a ATCC, American Type Culture Collection.