Table 1.

B. subtilis strains used in this study.

Strain	Genotype	Source or reference
E. coli MC1061	F−araD139 Δ(ara-leu)7696 galE15 galK16 Δ(lac)X74 hsdR2 (${\text{r}}_{\text{K}}^{-}$${\text{m}}_{\text{K}}^{+}$) mcrA mcrB1 rpsL (Strr)	Laboratory stock, (Casadaban and Cohen, 1980)
B. SUBTILIS
168	trpC2	Bacillus Genetic Stock Center, (Zeigler et al., 2008)
DOW41	trpC2 ccpA::specr	This study
DOW42	DOW41 with pHT304	This study
DOW43	DOW41 with pWH2422-ccpA-wt	This study
DOW44	DOW41 with pWH2422-ccpA-M17R	This study
DOW45	DOW41 with pWH2422-ccpA-T62H	This study
DOW46	DOW41 with pWH2422-ccpA-R304W	This study