| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116049303 |
| Locus Tag | PA14_46810 |
| Description | RNA polymerase ECF-subfamily sigma-70 factor |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386010951 |
| Locus Tag | PPUBIRD1_1344 |
| Description | RNA polymerase ECF-subfamily sigma factor |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648243 |
| Locus Tag | HCH_05594 |
| Description | TPR repeat-containing RNA polymerase sigma factor |