| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15598307 |
| Locus Tag | PA3111 |
| Description | folylpolyglutamate synthetase |
| Strain | Pseudomonas sp. UW4 |
| GI | 426410339 |
| Locus Tag | PputUW4_03440 |
| Description | bifunctional folylpolyglutamate synthase/dihydrofolate synthase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83645236 |
| Locus Tag | HCH_02439 |
| Description | folylpolyglutamate synthase |