Table 2.
The number of various virulence genes present in the chromosomes and plasmids of six STEC O45 strains analyzed in this study.
| Virulence Genes | E. coli O45:H16 | E. coli O45:H2 | ||||
|---|---|---|---|---|---|---|
| RM11911 | RM13745 | RM13752 | SJ7 | FWSEC0003 | 2011C-4251 | |
| Chromosome | ||||||
| stx 1a | 1α | 1 | 1 | 1 | 1 | 1 |
| stx 2a | - | - | - | - | - | 1 |
| gad | 2 | 2 | 2 | 2 | 2 | 2 |
| iss | 2 | 2 | 2 | 1 | 2 | 1 |
| iha | - | - | - | - | - | - |
| iroN | 1 | 1 | 1 | - | - | - |
| lpfA | 1 | 1 | 1 | - | - | - |
| cif | - | - | - | 1 | 1 | 1 |
| eae | - | - | - | 1 | 1 | 1 |
| efa1 | - | - | - | 1 | 1 | 1 |
| espA | - | - | - | 1 | 1 | 1 |
| espB | - | - | - | 1 | 1 | 1 |
| espF | - | - | - | 1 | 1 | 1 |
| espI | - | - | - | 1 | 1 | 1 |
| espJ | - | - | - | - | - | - |
| nleA | - | - | - | 1 | 1 | 1 |
| nleB | - | - | - | 3 | 3 | 3 |
| nleC | - | - | - | 1 | 1 | - |
| tir | - | - | - | 1 | 1 | 1 |
| tccP | - | - | - | - | - | - |
| Plasmid | ||||||
| hyl | 1 | 1 | 1 | 1 | 1 | 1 |
| afa | 1 | - | - | - | - | - |
| cdt | 1 | - | - | - | - | - |
| esp | 1 | 1 | - | - | - | - |
| cnf1 | 1 | - | 1 | - | - | - |
| iha | 1 | 1 | - | - | - | - |
| ehxA | - | - | - | 1 | - | 1 |
| etpD | - | - | - | 1 | 1 | 1 |
| stcE | - | - | - | 1 | 1 | 1 |
| toxB | - | - | - | - | - | - |
| katP | - | - | - | - | - | - |
α The numerical value indicates the number of genes present, and “-” means that no virulence gene was detected.