| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116051619 |
| Locus Tag | PA14_17480 |
| Description | RNA polymerase sigma factor RpoS |
| Strain | Pseudomonas stutzeri CCUG 29243 |
| GI | 392420752 |
| Locus Tag | A458_08435 |
| Description | RNA polymerase sigma factor RpoS |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644704 |
| Locus Tag | HCH_01877 |
| Description | nonessential primary sigma factor |