| Strain | Pseudomonas putida W619 |
| GI | 170719569 |
| Locus Tag | PputW619_0382 |
| Description | RNA-directed DNA polymerase |
| Strain | Pseudomonas denitrificans ATCC 13867 |
| GI | 472323678 |
| Locus Tag | H681_02510 |
| Description | RNA-directed DNA polymerase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83646665 |
| Locus Tag | HCH_03956 |
| Description | retron-type reverse transcriptase |