TABLE 1.

Strains used in this study

Strain	Description	Source or reference
WM1072	MG1655 ΔrecA	G. M. Weinstock
WM1074	MG1655 ΔlacU169	Lab collection
WM1115	MG1655 ftsA12	16
WM1125	MG1655 ftsZ84	53
WM2101	MG1655 ftsK44 ycaD::Tn10	41
WM1281	PB103 ftsA null recA56-srlD::Tn10(pSC101ts, ftsA)	54
WM2530	DY330 {W3110 ΔlacU169 gal490 pglD8 [λcI857 Δ(cro-bioA)]} ftsA* leuO::Tn10	55
WM4649	MG1655 ftsI23	34
WM5337	MG1655 zipA1 ΔnupC::Tn10	34
WM5521	EC1215 ΔftsEX	56
WM6483	WM1074 zipAΔP/Q ΔnupC::Tn10	This study
WM6392	WM1074 zipAΔ1/2 ΔnupC::Tn10	This study
WM6433	CR201 cya::kan pBAD-ccdB	57
WM6491	WM1074 zipAΔ1/2 ΔnupC::Tn10 ftsA12	This study
WM6492	WM1074 zipAΔP/Q ΔnupC::Tn10 ftsA12	This study