TABLE 1.

Escherichia coli strains.

Strain	Genotype	Source or reference
BW25113	lacI q rrnB T14 ΔlacZ WJ16 hsdR514 ΔaraBAD AH33 ΔrhaBAD LD78	Datsenko and Wanner (2000)
BB3	BW25113 (kan araC araBp-yrbK)1	Sperandeo et al. (2006)
JW0157	F-, Δ (araD-araB)567, ΔdegP775:kan, ΔlacZ4787 (:rrnB-3), λ − , rph-1, Δ (rhaD-rhaB)568, hsdR514	Keio collection, Baba et al. (2006)
JW2479	F-, Δ (araD-araB)567, ΔlacZ4787 (:rrnB-3), λ − , ΔyfgC742:kan, rph-1, Δ (rhaD-rhaB)568, hsdR514	Keio collection, Baba et al. (2006)
AMM92	BW25113 ΔdegP	This work
AMM93	BW25113 ΔyfgC	This work