| Strain | Pseudomonas putida BIRD-1 |
| GI | 386013807 |
| Locus Tag | PPUBIRD1_4303 |
| Description | ECF subfamily RNA polymerase sigma factor |
| Strain | Pseudomonas sp. UW4 |
| GI | 426407749 |
| Locus Tag | PputUW4_00836 |
| Description | ECF subfamily RNA polymerase sigma factor |
| Strain | Pseudomonas aeruginosa B136-33 |
| GI | 478476351 |
| Locus Tag | G655_00755 |
| Description | RNA polymerase ECF-subfamily sigma-70 factor |