| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15599900 |
| Locus Tag | PA4706 |
| Description | probable ATP-binding component of ABC transporter |
| Strain | Pseudomonas stutzeri DSM 4166 |
| GI | 386022010 |
| Locus Tag | PSTAA_3431 |
| Description | hemin importer ATP-binding subunit |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83648117 |
| Locus Tag | HCH_05463 |
| Description | hemin ABC transporter ATPase |