| Strain | Pseudomonas putida KT2440 |
| GI | 26988160 |
| Locus Tag | PP_1427 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Pseudomonas aeruginosa RP73 |
| GI | 514408305 |
| Locus Tag | M062_03700 |
| Description | RNA polymerase sigma factor AlgU |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644624 |
| Locus Tag | HCH_01790 |
| Description | RNA polymerase sigma factor RpoE |