| Domain | Name | Category | Type |
| IPR001912 | Ribosomal protein S4/S9, N-terminal | Domain | Domain |
| IPR002942 | RNA-binding S4 domain | Domain | Domain |
| IPR005710 | Ribosomal protein S4/S9, eukaryotic/archaeal | Family | Family |
| IPR018079 | Ribosomal protein S4, conserved site | Site | Conserved site |
| IPR022801 | Ribosomal protein S4/S9 | Family | Family |
| IPR036986 | RNA-binding S4 domain superfamily | Family | Homologous superfamily |