| Strain | Pseudomonas aeruginosa M18 |
| GI | 386059612 |
| Locus Tag | PAM18_3551 |
| Description | putative sigma-70 factor, ECF subfamily |
| Strain | Pseudomonas stutzeri DSM 4166 |
| GI | 386018854 |
| Locus Tag | PSTAA_0215 |
| Description | ECF subfamily RNA polymerase sigma-70 factor |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648243 |
| Locus Tag | HCH_05594 |
| Description | TPR repeat-containing RNA polymerase sigma factor |