| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116054137 |
| Locus Tag | PA14_05300 |
| Description | TonB domain-containing protein |
| Strain | Pseudomonas fluorescens A506 |
| GI | 387896143 |
| Locus Tag | PflA506_5052 |
| Description | type IV pilus associated protein TonB3 |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643443 |
| Locus Tag | HCH_00548 |
| Description | periplasmic protein TonB, links inner and outer membranes |