| Strain | Pseudomonas syringae pv. phaseolicola 1448A |
| GI | 71734854 |
| Locus Tag | PSPPH_0037 |
| Description | transcriptional regulator TrpI |
| Strain | Pseudomonas putida F1 |
| GI | 148545356 |
| Locus Tag | Pput_0099 |
| Description | LysR family transcriptional regulator |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482898977 |
| Locus Tag | AvCA6_02110 |
| Description | trpBA operon transcriptional regulator, LysR family; TrpI |