| Strain | Pseudomonas aeruginosa PA7 |
| GI | 152984341 |
| Locus Tag | PSPA7_3598 |
| Description | GTP cyclohydrolase I |
| Strain | Pseudomonas stutzeri RCH2 |
| GI | 431927127 |
| Locus Tag | Psest_1992 |
| Description | GTP cyclohydrolase I |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83643422 |
| Locus Tag | HCH_00527 |
| Description | GTP cyclohydrolase I |