| Domain | Name | Category | Type |
| IPR002115 | Protein-tyrosine phosphatase, low molecular weight, mammalian | Family | Family |
| IPR017867 | Protein-tyrosine phosphatase, low molecular weight | Family | Family |
| IPR023485 | Phosphotyrosine protein phosphatase I | Domain | Domain |
| IPR036196 | Phosphotyrosine protein phosphatase I superfamily | Family | Homologous superfamily |