TABLE 1.
Strains used in this study
| Strain | Relevant genotype | Genotype or phenotype | Origin/reference |
|---|---|---|---|
| JJC520 | Wild type | deoA21 lac624lacY1 Cmr | 2 |
| MK1 | dam | As JJC520 but Δdam-16::Kanr | P1 transduction of Δdam-16::Kanr from E. coli Genetic Stock Center strain no. 7308 |
| MK2 | mutS | As JJC520 but mutS Ω(Smr/Spr) | P1 transduction of mutS Ω(Smr/Spr)/(4) |
| MK3 | dam mutS | As MK1 but ΔmutS Ω(Smr/Spr) | As above |
| MK4 | recD | As JJC520 but recD1901::Tn10 | P1 transduction of recD1901::Tn10 from E. coli Genetic Stock Center strain no. 7429 |
| MK5 | dam recD | As MK1 but recD1901::Tn10 | As above |
| MK6 | Wild type | As JJC520 but mhpC281::Tn10 Cms | P1 transduction of mhpC281::Tn10 from E. coli Genetic Stock Center strain no. 7333 |
| MK7 | dam | As MK6 but dam-13::Tn9 | P1 transduction of dam13::Tn9 from GM2199 strain kindly provided by M.G. Marinus |
| MK8 | mutH | As MK6 but mutH471::Tn5 | P1 transduction of mutH471::Tn5/(12) |
| MK9 | dam mutH | As MK7 but mutH471::Tn5 | As above |
| MK10 | uvrD | As MK6 but uvrD::phleo | P1 transduction of uvrD::phleo/(16) |
| MK11 | dam uvrD | As MK7 but uvrD::phleo | As above |