| Strain | Pseudomonas aeruginosa M18 |
| GI | 386060337 |
| Locus Tag | PAM18_4276 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Pseudomonas sp. UW4 |
| GI | 426408190 |
| Locus Tag | PputUW4_01278 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644624 |
| Locus Tag | HCH_01790 |
| Description | RNA polymerase sigma factor RpoE |