| Gene | Description | Domains |
|---|---|---|
| Spis_XP_022779650_1 | adenine phosphoribosyltransferase | Pribosyltran |
| Spis_XP_022787719_1 | phosphoribosyl pyrophosphate synthetase 1 | Pribosyltran, Pribosyltran_N |
| Spis_XP_022798517_1 | hypoxanthine phosphoribosyltransferase 1 | Pribosyltran |
| Spis_XP_022803559_1 | uridine monophosphate synthetase | OMPdecase, Pribosyltran |