| Domain | Name | Category | Type |
| IPR003528 | Long hematopoietin receptor, single chain, conserved site | Site | Conserved site |
| IPR003961 | Fibronectin type III | Domain | Domain |
| IPR009167 | Erythropoietin receptor | Family | Family |
| IPR013783 | Immunoglobulin-like fold | Family | Homologous superfamily |
| IPR015152 | Growth hormone/erythropoietin receptor, ligand binding | Domain | Domain |
| IPR036116 | Fibronectin type III superfamily | Family | Homologous superfamily |