| Domain | Name | Category | Type |
| IPR000001 | Kringle | Domain | Domain |
| IPR000083 | Fibronectin, type I | Domain | Domain |
| IPR000742 | EGF-like domain | Domain | Domain |
| IPR001254 | Serine proteases, trypsin domain | Domain | Domain |
| IPR001314 | Peptidase S1A, chymotrypsin family | Family | Family |
| IPR009003 | Peptidase S1, PA clan | Family | Homologous superfamily |
| IPR013806 | Kringle-like fold | Family | Homologous superfamily |
| IPR018056 | Kringle, conserved site | Site | Conserved site |
| IPR018114 | Serine proteases, trypsin family, histidine active site | Site | Active site |
| IPR026280 | Tissue plasminogen activator | Family | Family |
| IPR033116 | Serine proteases, trypsin family, serine active site | Site | Active site |
| IPR034811 | Tissue-type plasminogen activator | Family | Family |
| IPR038178 | Kringle superfamily | Family | Homologous superfamily |
| IPR043504 | Peptidase S1, PA clan, chymotrypsin-like fold | Family | Homologous superfamily |