TABLE 1.

S. typhimurium strains used in this study.

Straina	Genotype
MT1228	DUP3169 [Φ(mgtA′-cat+-lacZ+Y+)*pIVET8*(mgtA+)]
MT1865	DUP3169 [Φ(mgtA′-cat+-lacZ+Y+)*pIVET8*(mgtA+)] phoP102::Tn10d-Cm
MT1866	DUP3169 [Φ(mgtA′-cat+-lacZ+Y+)*pIVET8*(mgtA+)] phoQ24
MT1695	DUP3170 [Φ(mgtB′-cat+-lacZ+Y+)*pIVET8*(mgtB+)]
MT1696	DUP3170 [Φ(mgtB′-cat+-lacZ+Y+)*pIVET8*(mgtB+)] phoP102::Tn10d-Cm
MT1697	DUP3170 [Φ(mgtB′-cat+-lacZ+Y+)*pIVET8*(mgtB+)] phoQ24
MT1701	DUP3210 [Φ(spvB′-cat+-lacZ+Y+)*pIVET8*(spvB+)]
MT1702	DUP3210 [Φ(spvB′-cat+-lacZ+Y+)*pIVET8*(spvB+)] phoP102::Tn10d-Cm
MT1703	DUP3210 [Φ(spvB′-cat+-lacZ+Y+)*pIVET8*(spvB+)] phoQ24
MT1704	DUP3188 [Φ(iviVI-A′-cat+-lacZ+Y+)*pIVET8*(iviVI-A+)]
MT1705	DUP3188 [Φ(iviVI-A′-cat+-lacZ+Y+)*pIVET8*(iviVI-A+)] phoP102::Tn10d-Cm
MT1706	DUP3188 [Φ(iviVI-A′-cat+-lacZ+Y+)*pIVET8*(iviVI-A+)] phoQ24
MT1818	DUP3350 [Φ(iviXVI′-cat+-lacZ+Y+)*pIVET8*(iviXVI+)]
MT1898	DUP3350 [Φ(iviXVI′-cat+-lacZ+Y+)*pIVET8*(iviXVI+)] phoP102::Tn10d-Cm
MT1899	DUP3350 [Φ(iviXVI′-cat+-lacZ+Y+)*pIVET8*(iviXVI+)] phoQ24
MT1371	DUP3193 [Φ(phoP′-purA+-lacZ+Y+)*pIVET1*(phoP+)]
MT1681	DUP3193 [Φ(phoP′-purA+-lacZ+Y+)*pIVET1*(phoP102::Tn10d-Cm)]
MT1680	DUP3193 [Φ(phoP′-purA+-lacZ+Y+)*pIVET1*(phoP+)] phoQ24
MT1698	DUP3465 [Φ(pmrB′-cat+-lacZ+Y+)*pIVET8*(pmrB+)]
MT1699	DUP3465 [Φ(pmrB′-cat+-lacZ+Y+)*pIVET8*(pmrB+)] phoP102::Tn10d-Cm
MT1700	DUP3465 [Φ(pmrB′-cat+-lacZ+Y+)*pIVET8*(pmrB+)] phoQ24
MT1819	DUP3371 [Φ(iviXVII′-cat+-lacZ+Y+)*pIVET8*(iviXVII+)]
MT1900	DUP3371 [Φ(iviXVII′-cat+-lacZ+Y+)*pIVET8*(iviXVII+)] phoP102::Tn10d-Cm
MT1901	DUP3371 [Φ(iviXVII′-cat+-lacZ+Y+)*pIVET8*(iviXVII+)] phoQ24
MT1772	DUP3142 [Φ(fhuA′-purA+-lacZ+Y+)*pIVET1*(fhuA+)]
MT1833	DUP3127 [Φ(cirA′-cat+-lacZ+Y+)*pIVET8*(cirA+)]
MT1801	DUP3231 [Φ(entE′-cat+-lacZ+Y+)*pIVET8*(entF+)]

^aAll derived from S. typhimurium ATCC 14028 (CDC 6516-60).