Table 1. Strains and plasmids.

Strain	Genotype	Reference or Source
BW25113	Δ(araD-araB)567 ΔlacZ4787( : : rrnB-3) λ− rph-1 Δ(rhaD-rhaB)568 hsdR514	E. coli Genetic Stock Center; Baba et al. (2006)
JW0803-7	BW25113 ΔybiS790 : : kan	E. coli Genetic Stock Center; Baba et al. (2006)
JW0908-1	BW25113 ΔycbB742 : : kan	E. coli Genetic Stock Center; Baba et al. (2006)
JW1668-1	BW25113 ΔynhG753 : : kan	E. coli Genetic Stock Center; Baba et al. (2006)
JW1968-1	BW25113 ΔerfK761 : : kan	E. coli Genetic Stock Center; Baba et al. (2006)
JW5820-2	BW25113 ΔycfS775 : : kan	E. coli Genetic Stock Center; Baba et al. (2006)
JW1667-5	BW25113 Δlpp752 : : kan	E. coli Genetic Stock Center; Baba et al. (2006)
PM2180	BW25113/pCA24N	This study
PM2214	ΔybiS790 : : frt ΔycfS775 : : frt ΔerfK761 : : kan (Δldt3)	This study
PM2405	ΔynhG753 : : frt ΔybiS790 : : frt ΔycfS775 : : frt ΔerfK761 : : frt ΔycbB742 : : kan (Δldt5)	This study
PM2406	PM2405/pCA24N	This study
PM2478	PM2214/pCA24N	This study
PM2482	ΔynhG753 : : frt ΔycbB742 : : kan (Δldt2)	This study
PM2527	PM2214/pCA24N ybiS	This study
PM2680	BW25113 ΔdapA : : Cm	This study
PM2681	PM2482 ΔdapA : : Cm	This study
PM2682	PM2405 ΔdapA : : Cm	This study
PM2691	PM2214 ΔdapA : : Cm	This study
PM2692	Δlpp752 : : kan ΔdapA : : Cm	This study
Plasmids
pCA24N	lacI cm 6×His	This study
pCA24N.ybiS	yibS+	Kitagawa et al. (2005)
pFLP2	ori1600 rep sacB flp cI oriT bla	Hoang et al. (1998)