| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116048678 |
| Locus Tag | PA14_54430 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Pseudomonas fulva 12-X |
| GI | 333901425 |
| Locus Tag | Psefu_3242 |
| Description | ECF subfamily RNA polymerase sigma-24 subunit |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644624 |
| Locus Tag | HCH_01790 |
| Description | RNA polymerase sigma factor RpoE |