Table 1. Distribution of the 198 detected group II intron copies among the 18 Enterobacteriales genera/complexes.
| Bacterial genus | Number ofstrains | Number ofcopies | Distinctcopies | Full-lengthdistinct copies | Distinctfragments |
| Escherichia/Shigella | 35 | 122 | 67 | 40* | 27 |
| Hamiltonella | 1 | 38 | 38 | 30 | 8 |
| Photorabdus | 2 | 10 | 9 | 2 | 7 |
| Sodalis | 1 | 8 | 8 | 3 | 5 |
| Klebsiella | 3 | 5 | 5 | 2 | 3 |
| Dickeya | 2 | 4 | 3 | 3 | 0 |
| Serratia | 1 | 3 | 3 | 0 | 3 |
| Yersinia | 12 | 8 | 2 | 0 | 2 |
| Buchnera | 6 | 0 | 0 | 0 | 0 |
| Blochmania | 2 | 0 | 0 | 0 | 0 |
| Citrobacter | 1 | 0 | 0 | 0 | 0 |
| Cronobacter | 1 | 0 | 0 | 0 | 0 |
| Edwarsiella | 1 | 0 | 0 | 0 | 0 |
| Enterobacter | 1 | 0 | 0 | 0 | 0 |
| Pectobacterium/Erwinia | 3 | 0 | 0 | 0 | 0 |
| Proteus | 1 | 0 | 0 | 0 | 0 |
| Salmonella | 16 | 0 | 0 | 0 | 0 |
| Wigglesworthia | 1 | 0 | 0 | 0 | 0 |
| TOTAL | 90 | 198 | 135 | 80 | 55 |
*:
Two orthologous copies in the Escherichia/Shigella complex are full-length in some strains and fragmented in others; they are counted only as distinct full-length copies.