| Strain | Pseudomonas putida BIRD-1 |
| GI | 386009784 |
| Locus Tag | PPUBIRD1_0147 |
| Description | Ferric uptake regulator family protein |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472323377 |
| Locus Tag | H681_01005 |
| Description | transcriptional regulator np20 |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643432 |
| Locus Tag | HCH_00537 |
| Description | Fe2+/Zn2+ uptake regulation protein |