| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15598829 |
| Locus Tag | PA3633 |
| Description | 4-diphosphocytidyl-2-C-methylerythritol synthase |
| Strain | Pseudomonas putida W619 |
| GI | 170723222 |
| Locus Tag | PputW619_4061 |
| Description | 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644697 |
| Locus Tag | HCH_01869 |
| Description | 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase |