Table 1. Bacterial strains and plasmids used in this study.

Strains	Genotype	Source
CFT073	Wild-type Uropathogenic E. coli	H. L. Mobley [33]
SM3010	ΔuvrY::cam	CFT073
SM3011	ΔcsrA::cam	CFT073
SM3013	ΔuvrY::cam/p-uvrY	SM3010
SM3014	ΔcsrA::cam/p-csrA	SM3011
MG1655	Wild-type K-12 λ- rph-1	D. J. Jin [34]
AM1002	ΔuvrY::cam	MG1655
AM1005	ΔuvrY::cam/p-uvrY	AM1002
TR1-5MG1655	ΔcsrA::kan	T. Romeo [36]
AM1006	ΔcsrA::kan/p-csrA	TR1-5 MG1655
Plasmids
pBR322	Cloning Vector	Invitrogen
pSM2	pBR322 containing uvrY gene; Apr	[29]
pSM7	pBR322 containing csrA gene; Apr	[29]
pBB2-1	fimA-lacZYA on pPR274	William R. Schwan [40]
pWS124-17	fimA-lacZYA locked on on pPP2-6	William R. Schwan [40]