| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15598998 |
| Locus Tag | PA3803 |
| Description | probable isoprenoid biosynthetic protein GcpE |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386010516 |
| Locus Tag | PPUBIRD1_0904 |
| Description | protein IspG |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83647150 |
| Locus Tag | HCH_04456 |
| Description | 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase |