| Strain | Pseudomonas aeruginosa M18 |
| GI | 386056222 |
| Locus Tag | PAM18_0153 |
| Description | transcriptional regulator PcaQ |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472325381 |
| Locus Tag | H681_11085 |
| Description | pca operon transcription factor PcaQ |
| Strain | Pseudomonas protegens Pf-5 |
| GI | 70732702 |
| Locus Tag | PFL_5397 |
| Description | pca operon transcription factor PcaQ |