Table 1.
Study strains and plasmids
| Strain or plasmid | Descriptiona | Source or reference |
|---|---|---|
| NCTC 8325-4 | NCTC 8325 cured of prophages | 39 |
| SH1000 | NCTC 8325-4 with rsbU mutation corrected | 40 |
| SA-K1758 | NCTC 8325-4 norA::erm | 41 |
| SA-K2068 | NCTC 8325-4 with increased mepA expression | 4, 42 |
| SA-K3731 | SA-K2068 norA::erm | This study |
| SA-K2124 | SH1000 norA::lacZ | 43 |
| SA-K3486 | SA-K2124 + pK436 | This study |
| pALC2073 | xyl-tetO-inducible promoter controlling expression of cloned genes; Cmr | 44 |
| pK436 | pALC2073-mepA (wild-type gene from NCTC 8325-4) | 4 |
a
Cmr, chloramphenicol resistance selection.