| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431928192 |
| Locus Tag | Psest_3100 |
| Description | RNA polymerase, sigma-24 subunit, RpoE |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472324510 |
| Locus Tag | H681_06700 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644624 |
| Locus Tag | HCH_01790 |
| Description | RNA polymerase sigma factor RpoE |