Table 1.

Bacterial strains and plasmids used in this study

Strain or plasmid	Genotype or description	Source or reference
Strains
E2348/69	Prototype EPEC strain (serotype O127:H6)	[19]
JPN15	EAF plasmid-cured derivative of E2348/69	[20]
MC4100	araD139Δ(argF−lac)U169 rpsL150 relA1flbB5301deoC1ptsF25rbsR	[21]
JLM164	MC4100 ΦLEE1−lacZ	[14]
JLM165	MC4100 ΦLEE4−lacZ	[14]
SIP812	MC4100 zur::Spcr/Strr	[22]
TB742	MC4100 ΔzntR	[23]
CT32	MC4100 rpoE−lacZ	[24]
MCamp	MC4100 bla−lacZ	[25]
CVD452	E2348/69 ΔescN::aphT	[26]
LRT-9	EPEC O111:abH2	[27]
Plasmids
pRS551	Promoterless lacZ reporter fusion vector	[28]
pVSAPR	bla−lacZ	[25]
pJLM164	LEE 1−lacZ	[14]
pJLM165	LEE 4−lacZ	[14]