| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116049303 |
| Locus Tag | PA14_46810 |
| Description | RNA polymerase ECF-subfamily sigma-70 factor |
| Strain | Pseudomonas stutzeri CCUG 29243 |
| GI | 392423142 |
| Locus Tag | A458_20540 |
| Description | ECF subfamily RNA polymerase sigma-70 factor |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648243 |
| Locus Tag | HCH_05594 |
| Description | TPR repeat-containing RNA polymerase sigma factor |