| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15597859 |
| Locus Tag | PA2663 |
| Description | psl and pyoverdine operon regulator, PpyR |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472325936 |
| Locus Tag | H681_13860 |
| Description | hypothetical protein |
| Strain | Pseudomonas protegens Pf-5 |
| GI | 70730674 |
| Locus Tag | PFL_3310 |
| Description | transmembrane sensor/regulator PpyR |