| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116051619 |
| Locus Tag | PA14_17480 |
| Description | RNA polymerase sigma factor RpoS |
| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431927907 |
| Locus Tag | Psest_2806 |
| Description | RNA polymerase, sigma 38 subunit, RpoS |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644704 |
| Locus Tag | HCH_01877 |
| Description | nonessential primary sigma factor |