TABLE 1.
E. coli K-12 strains
| Strains | Relevant characteristic(s) | Source or reference |
|---|---|---|
| CU1008 | ilvA | L. S. Williams |
| DRN-1 | serA::Mud1 | 21 |
| MEW1 | CU1008 Δlac | 21 |
| MEW26 | MEW1 lrp::Tn10 | 21 |
| MEW30 | MEW1 metK84 | 21 |
| MEW45 | MEW1 lrp::lacZ | 20 |
| RG62 | metK84 lrp | 8, 21 |
| MEW305 | serA::λplacMu9 | Z. Q. Shao |
| MEW311 | MEW305 Δara714 | 6 |
| MEW402 | MEW1 metK84; leucine-requiring | This work |
| MEW403 | MEW1 metK84 lrp::lacZ | This work |