TABLE 5.
Presence of insertions in the chromosome of different strains of E. coli
| Strain | Presence of eae | Product size (kb)a
|
|
|---|---|---|---|
| O island 141 position (yhjW) | O island 154 position (pstS) | ||
| E. coli K-12 (HB101) | − | —b | — |
| EHEC O113:H21 (EH41) | − | — | 5.5 |
| EHEC O113:H21 (EH53) | − | — | 5.5 |
| EHEC O113:H21 (EH71) | − | — | 5.5 |
| EHEC O116:H21 (EH42) | − | — | 5.5 |
| EHEC O130:H11 (EH43) | − | 6.0 | 5.5 |
| EHEC O157:H7 (EDL933) | + | 6.0 | 6.9 |
| EHEC O111:H− (EH39) | + | 6.0 | 5.5 |
| EPEC O55:H7 | + | 6.0 | 6.9 |
| EPEC O127:H6 (E2348/69) | + | — | — |
| REPEC O103:H2 (84/110) | + | 6.0 | — |
| REPEC O15:H− (83/39) | + | 6.0 | 5.5 |
a
Approximate sizes from amplification of the regions corresponding to O islands 141 and 154 in the genome of EHEC O157:H7. In both PCRs, a 200-bp product is generated from E. coli K-12.
b
—, no O island was detected.