| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66044358 |
| Locus Tag | Psyr_1107 |
| Description | sigma-70 region 2 |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472325417 |
| Locus Tag | H681_11265 |
| Description | ECF subfamily RNA polymerase sigma-24 factor |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647569 |
| Locus Tag | HCH_04888 |
| Description | DNA-directed RNA polymerase specialized sigma subunit sigma24-like protein |