| Domain | Name | Category | Type |
| IPR000276 | G protein-coupled receptor, rhodopsin-like | Family | Family |
| IPR001611 | Leucine-rich repeat | Repeat | Repeat |
| IPR002172 | Low-density lipoprotein (LDL) receptor class A repeat | Repeat | Repeat |
| IPR003591 | Leucine-rich repeat, typical subtype | Repeat | Repeat |
| IPR008112 | Relaxin receptor | Family | Family |
| IPR017452 | GPCR, rhodopsin-like, 7TM | Domain | Domain |
| IPR023415 | Low-density lipoprotein (LDL) receptor class A, conserved site | Site | Conserved site |
| IPR032675 | Leucine-rich repeat domain superfamily | Family | Homologous superfamily |
| IPR036055 | LDL receptor-like superfamily | Family | Homologous superfamily |