| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15596130 |
| Locus Tag | PA0933 |
| Description | probable RNA methyltransferase |
| Strain | Pseudomonas stutzeri CCUG 29243 |
| GI | 392420863 |
| Locus Tag | A458_08990 |
| Description | 23S rRNA m(5)U1939 methyltransferase |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83644637 |
| Locus Tag | HCH_01806 |
| Description | 23S rRNA 5-methyluridine methyltransferase |