| Domain | Name | Category | Type |
| IPR002792 | TRAM domain | Domain | Domain |
| IPR005839 | Methylthiotransferase | Family | Family |
| IPR006466 | MiaB-like tRNA modifying enzyme, archaeal-type | Family | Family |
| IPR006638 | Elp3/MiaB/NifB | Domain | Domain |
| IPR007197 | Radical SAM | Domain | Domain |
| IPR013848 | Methylthiotransferase, N-terminal | Domain | Domain |
| IPR020612 | Methylthiotransferase, conserved site | Site | Conserved site |
| IPR023404 | Radical SAM, alpha/beta horseshoe | Family | Homologous superfamily |
| IPR038135 | Methylthiotransferase, N-terminal domain superfamily | Family | Homologous superfamily |