| Domain | Name | Category | Type |
| IPR000387 | Tyrosine specific protein phosphatases domain | Domain | Domain |
| IPR001339 | mRNA capping enzyme, adenylation domain | Domain | Domain |
| IPR012340 | Nucleic acid-binding, OB-fold | Family | Homologous superfamily |
| IPR013846 | mRNA capping enzyme, C-terminal | Domain | Domain |
| IPR016130 | Protein-tyrosine phosphatase, active site | Site | Active site |
| IPR017074 | mRNA capping enzyme, bifunctional | Family | Family |
| IPR029021 | Protein-tyrosine phosphatase-like | Family | Homologous superfamily |