| Strain | Pseudomonas aeruginosa DK2 |
| GI | 392985757 |
| Locus Tag | PADK2_21885 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Pseudomonas protegens CHA0 |
| GI | 501678951 |
| Locus Tag | PFLCHA0_c14840 |
| Description | RNA polymerase sigma-H factor AlgU |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644624 |
| Locus Tag | HCH_01790 |
| Description | RNA polymerase sigma factor RpoE |