| Domain | Name | Category | Type |
| IPR004365 | OB-fold nucleic acid binding domain, AA-tRNA synthetase-type | Domain | Domain |
| IPR012340 | Nucleic acid-binding, OB-fold | Family | Homologous superfamily |
| IPR014647 | CST complex subunit Stn1 | Family | Family |
| IPR015253 | Stn1, C-terminal | Domain | Domain |
| IPR036388 | Winged helix-like DNA-binding domain superfamily | Family | Homologous superfamily |
| IPR036390 | Winged helix DNA-binding domain superfamily | Family | Homologous superfamily |
| IPR040260 | Replication factor A protein-like | Family | Family |
| IPR042082 | CST complex subunit Stn1, wHTH1 motif superfamily | Family | Homologous superfamily |