TABLE 1.
Bacterial strains and plasmids
| Strain or plasmid | Relevant characteristic(s) | Reference or source |
|---|---|---|
| E. coli K-12 | ||
| HB101 | F−leuB6 supE44 hsdS20(rB− mB−) recA13 ara-14 proA2 galK2 lacY1 rpsL20 xyl-5 mtl-1 | 8 |
| GC4468 | F− Δ(lac-argF)U169 rpsL179 | 10 |
| QC2725 | GC4468 sodC::Kanr | This work |
| QC1110 | GC4468 katF::Tn10 Tetr | This work |
| Plasmids | ||
| PCR 2-1-topo | Cloning vector | Invitrogen |
| pTP223 | gam bet exo-expressing plasmid under Ptac control | 32 |
| pRI203 | Y. pseudotuberculosis invA cloned in pBR325 | 23 |
| pRIEcSOD | E. coli sodC cloned in pRI203 | This work |
| pMC1403 | Promoter probe vector | 11 |
| pMCPromEcSOD | sodC promoter cloned upstream of lacZ in pMC1403 | This work |