| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66043304 |
| Locus Tag | Psyr_0033 |
| Description | tryptophan synthase subunit alpha |
| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77456332 |
| Locus Tag | Pfl01_0104 |
| Description | tryptophan synthase subunit alpha |
| Strain | Pseudomonas aeruginosa PA7 |
| GI | 152983685 |
| Locus Tag | PSPA7_0037 |
| Description | tryptophan synthase subunit alpha |