| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472323780 |
| Locus Tag | H681_03020 |
| Description | precorrin-6y C5,15-methyltransferase subunit CbiE |
| Strain | Pseudomonas aeruginosa C3719 |
| GI | 254235890 |
| Locus Tag | PACG_01837 |
| Description | precorrin-6y-dependent methyltransferase CobL |
| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77456831 |
| Locus Tag | Pfl01_0603 |
| Description | uroporphyrin-III C/tetrapyrrole methyltransferase |