| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15600285 |
| Locus Tag | PA5092 |
| Description | imidazolone-5-propionate hydrolase HutI |
| Strain | Pseudomonas syringae pv. phaseolicola 1448A |
| GI | 71734054 |
| Locus Tag | PSPPH_4867 |
| Description | imidazolonepropionase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83646866 |
| Locus Tag | HCH_04169 |
| Description | imidazolonepropionase |