| Strain | Pseudomonas protegens Pf-5 |
| GI | 70733549 |
| Locus Tag | PFL_0036 |
| Description | tryptophan synthase subunit alpha |
| Strain | Pseudomonas putida HB3267 |
| GI | 431800106 |
| Locus Tag | B479_00740 |
| Description | tryptophan synthase subunit alpha |
| Strain | Pseudomonas aeruginosa 2192 |
| GI | 254243147 |
| Locus Tag | PA2G_03946 |
| Description | tryptophan synthase alpha chain |