| InterPro term | Type | Description | Source |
|---|
| IPR001190 | Domain | SRCR domain | Interproscan |
| IPR001254 | Domain | Serine proteases, trypsin domain | Interproscan |
| IPR001314 | Family | Peptidase S1A, chymotrypsin family | Interproscan |
| IPR002172 | Repeat | Low-density lipoprotein (LDL) receptor class A repeat | Interproscan |
| IPR003884 | Domain | Factor I / membrane attack complex | Interproscan |
| IPR009003 | Homologous_superfamily | Peptidase S1, PA clan | Interproscan |
| IPR017448 | Domain | SRCR-like domain | Interproscan |
| IPR018114 | Active_site | Serine proteases, trypsin family, histidine active site | Interproscan |
| IPR023415 | Conserved_site | Low-density lipoprotein (LDL) receptor class A, conserved site | Interproscan |
| IPR033116 | Active_site | Serine proteases, trypsin family, serine active site | Interproscan |
| IPR036055 | Homologous_superfamily | LDL receptor-like superfamily | Interproscan |
| IPR036772 | Homologous_superfamily | SRCR-like domain superfamily | Interproscan |
| IPR043504 | Homologous_superfamily | Peptidase S1, PA clan, chymotrypsin-like fold | Interproscan |
| IPR048719 | Domain | Complement factor I, KAZAL domain | Interproscan |
| IPR048722 | Domain | Complement factor I, FIMAC N-terminal domain | Interproscan |
| IPR050127 | Family | Serine Proteases (Peptidase S1 Family) | Interproscan |