| Strain | Pseudomonas syringae pv. syringae B728a |
| GI | 66044638 |
| Locus Tag | Psyr_1390 |
| Description | RNA-binding S4 |
| Strain | Pseudomonas putida GB-1 |
| GI | 167035218 |
| Locus Tag | PputGB1_4225 |
| Description | RNA-binding S4 domain-containing protein |
| Strain | Azotobacter vinelandii CA6 |
| GI | 482900134 |
| Locus Tag | AvCA6_16880 |
| Description | 16S rRNA uridine-516 pseudouridylate synthase |