| Family | Superfamily | Architecture | Class | Structure |
|---|---|---|---|---|
| SSU_rRNA_archaea | SSU_rRNA | rRNA | structured_complex | |
| SSU_rRNA_bacteria | SSU_rRNA | rRNA | structured_complex | |
| SSU_rRNA_eukarya | SSU_rRNA | rRNA | structured_complex | |
| SSU_rRNA_microsporidia | SSU_rRNA | rRNA | structured_complex | |
| SSU_trypano_mito | SSU_rRNA | rRNA | structured_complex |