TABLE 2.
E. coli strains used in this studya
| Strain | Genotype | Reference or source |
|---|---|---|
| Wild type | ||
| W3310 | lacIq (F+) | 5 |
| AB1157 | argE3 his-4 leuB6 proA2 thr-1 ara-14 galK2 lacY1 mtl-1 xyl-5 thi-1 rpsL31 tsx-33 supE44 | A. J. Clark |
| Isogenic to AB1157 | ||
| JC10287 | Δ(srlR-recA)304 | A. J. Clark |
| JC9387 | recB21 recC22 sbcB15 sbcC201 | A. J. Clark |
| JC9239 | recF143 | A. J. Clark |
| KM353 | recD | 25 |
| KM354 | recJ | 25 |
| KM19 | Δ(recC ptr recB recD)::kan sbcB15 sbcC201 | This study |
| KM20 | Δ(recC ptr recB recD)::Plac-bet exo kan sbcB15 sbcC201 | This study |
| KM21 | Δ(recC ptr recB recD)::kan | This study |
| KM22 | Δ(recC ptr recB recD)::Plac-bet exo kan | This study |
| KM26 | Δ(recC ptr recB recD)::Plac-bet exo kan recF143 | This study |
| KM29 | Δ(recC ptr recB recD)::Plac-bet exo kan recJ | This study |
a
Constructions for strains prepared for this study are described in Materials and Methods.