| Strain | Pseudomonas aeruginosa RP73 |
| GI | 514412214 |
| Locus Tag | M062_26825 |
| Description | histidine ABC transporter substrate-binding protein |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472327739 |
| Locus Tag | H681_22890 |
| Description | ABC transporter substrate-binding protein |
| Strain | Pseudomonas protegens Pf-5 |
| GI | 70733907 |
| Locus Tag | PFL_0403 |
| Description | histidine ABC transporter periplasmic histidine-binding protein |