| 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 |