Orthologous Data for Each Species
| Species | Study set orthologs | TF orthologs[i] | Mean % identity of intergenic regions[ii] |
| Escherichia coli | 166 | 48 | 100 |
| Salmonella typhi | 161 | 46 | 70.0 ± 12.4 |
| Yersinia pestis | 138 | 40 | 48.1 ± 7.9 |
| Buchnera sp. | 27 | 1 | 39.6 ± 3.4 |
| Haemophilus influenzae | 72 | 21 | 41.5 ± 4.9 |
| Vibrio cholerae | 112 | 31 | 41.6 ± 6.0 |
| Shewanella oneidensis | 91 | 24 | 41.1 ± 5.0 |
| Pseudomonas aeruginosa | 92 | 25 | 37.7 ± 3.7 |
| Acidithiobacillus ferrooxidans | 46 | 11 | 39.2 ± 3.7 |
| Xylella fastidiosa | 50 | 7 | 38.7 ± 3.4 |
[i] Transcription factors (TF) that regulate expression of the study set genes in E. coli.
[ii] GAP (GCG Wisconsin Package version 10.2) was used to calculate the % identity (relative to E. coli) of the available orthologous intergenic sequences.