| Gene | Description | Domains | Gene lists |
|---|---|---|---|
| Spis_XP_022777945_1 | BRX1, biogenesis of ribosomes | Brix, Vma12 | — |
| Spis_XP_022781395_1 | ribosome production factor 2 homolog | Brix, DUF6939 | — |
| Spis_XP_022786390_1 | peter pan homolog | Brix | — |
| Spis_XP_022795578_1 | ribosome production factor 1 homolog | AP3D1, Brix, DUF4887 | — |
| Spis_XP_022806466_1 | IMP4, U3 small nucleolar ribonucleoprotein | Brix | — |
| Spis_XP_022807875_1 | BRX1, biogenesis of ribosomes | Brix | — |