| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66043355 |
| Locus Tag | Psyr_0084 |
| Description | extracellular solute-binding protein |
| Strain | Pseudomonas putida DOT-T1E |
| GI | 397697196 |
| Locus Tag | T1E_4456 |
| Description | sulfate ABC transporter, periplasmic |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482901202 |
| Locus Tag | AvCA6_31720 |
| Description | Sulfate-binding precursor protein |