TABLE 1.
Bacterial strains used for this study
| E. coli K-12 derivative(s) | Relevant characteristics | Reference or originb |
|---|---|---|
| W3110a | rph-1 IN(rrnD-rrnE)1 | PEGM |
| A59 | Isolated from a 30-year-old stab | 26 |
| E26, E41 | proB-IS30, isolated from a 42-day-old stab (stab E) | This work |
| F10 | proB-IS30, isolated from a 42-day-old stab (stab F) | This work |
| G92, G95, G113 | proB-IS30, isolated from a 183-day-old stab (stab G) | This work |
| H122, H148 | proB-IS30, isolated from a 183-day-old stab (stab H) | This work |
| B52 | proB-IS30, isolated from a 183-day-old stab (stab B) | PEGM |
| D22 | proB-IS30, isolated from a 183-day-old stab (stab D) | PEGM |
| Y4, Y5, Y15, Y24, Y26, Y34, Y35, Y39, Y42, Y45, Y46, Y49, Y50, Y51, Y52, Y53, Y54, Y58, Y59, Y60 | proB-IS30, isolated from a 5-year-old stab (stab Y) | PEGM |
| Z14, Z20, Z22, Z24, Z27, Z28, Z29, Z57 | proB-IS30, isolated from a 4.5-year-old stab (stab Z) | PEGM |
| W2914a | Δ(gpt-proA) (also called proA2) | CGSC |
| W2915 | proA2 | CGSG |
| HB101 | proA2 | PEGM |
a
Strains W2914 and W3110 were derived from E. coli K-12 by two distinct lineages (5).
b
PEGM, Plasticité et Expression des Génomes Microbiens, Université Joseph Fourier, Grenoble, France, CGSC, Coli Genetic Stock Center (Yale University).