| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595600 |
| Locus Tag | PA0403 |
| Description | transcriptional regulator PyrR |
| Strain | Pseudomonas stutzeri DSM 10701 |
| GI | 397685446 |
| Locus Tag | PSJM300_01635 |
| Description | bifunctional pyrimidine regulatory protein PyrR/uracil phosphoribosyltransferase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643446 |
| Locus Tag | HCH_00552 |
| Description | pyrimidine operon attenuation protein/uracil phosphoribosyltransferase |