| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596497 |
| Locus Tag | PA1300 |
| Description | probable sigma-70 factor, ECF subfamily |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472324821 |
| Locus Tag | H681_08255 |
| Description | putative DNA-binding protein |
| Strain | Pseudomonas protegens Pf-5 |
| GI | 346642790 |
| Locus Tag | PFL_1373 |
| Description | ECF family RNA polymerase sigma factor |