Table 1.

Strains used in this study

Strain	Relevant features	Source or reference
BW25113 (or BW)	Δ(araD-araB)567 ΔlacZ4787(::rrnB-3) λ− rph-1 Δ(rhaD-rhaB)568 hsdR514	Nara Institute, Japan
BW ΔrsmB::kan (or BW ΔrsmB)	BW derivative with rsmB deletion	This study
BW ΔrsmD::kan (or BW ΔrsmD)	BW derivative with rsmD deletion	This study
BW ΔrsmBΔrsmD::kan (or BW ΔrsmBΔrsmD)	BW derivative with deletion of rsmB and rsmD	This study
BW S9Δ3::kan (or BW S9Δ3)	BW derivative with a deletion of C terminus of S9 tail	This study