Table 1.

Mycobacterium smegmatis strains used in this study

M. smegmatis strain	Description	Source
mc2155	Wild type	38
NR116	ΔsecA2	17
NR158	mc2155 + pMV306.kan, wild type + empty plasmid	17
NR160	NR116 + pMV306.kan, ΔsecA2 + empty plasmid	17
NR172	NR116 + pYA810, ΔsecA2 + secA2 complementing plasmid	17
NR178	NR116 + pNR25, ΔsecA2 + secA2 K129R plasmid	17
NR236	NR178 with extragenic suppressor mutation 4S	This work
NR151	NR178 with extragenic suppressor mutation 24S	This work
NR154	NR178 with extragenic suppressor mutation 29S	This work
NR155	NR178 with extragenic suppressor mutation 33S	This work
NR156	NR178 with extragenic suppressor mutation 33B	This work
NR230	NR178 with extragenic suppressor mutation 1S	This work
NR234	NR178 with extragenic suppressor mutation 3S	This work
NR248	NR178 with extragenic suppressor mutation 10S	This work