| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116051619 |
| Locus Tag | PA14_17480 |
| Description | RNA polymerase sigma factor RpoS |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28868771 |
| Locus Tag | PSPTO_1565 |
| Description | RNA polymerase sigma-38 factor |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644704 |
| Locus Tag | HCH_01877 |
| Description | nonessential primary sigma factor |