TABLE 1.
Strains and plasmids
| Strain or plasmid | Genotype | Reference |
|---|---|---|
| E. coli | ||
| RFM443 | rpsL200 galK2 lacΔ74 | 22 |
| DPD2668 | RFM443/pUC19 | 40 |
| DPD2669 | RFM443/pDEW140 | 40 |
| Plasmid | ||
| pDEW140 | pUC19 plus sdiA (EcoRI) | 40 |
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