| Strain | Pseudomonas sp. UW4 |
| GI | 426410778 |
| Locus Tag | PputUW4_03880 |
| Description | Fis family two component sigma-54 specific transcriptional regulator |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472324940 |
| Locus Tag | H681_08860 |
| Description | two-component response regulator |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647863 |
| Locus Tag | HCH_05196 |
| Description | sigma 54-dependent transcriptional activator |