| IPR011061 | Hirudin/antistatin | Homologous Superfamily |
| IPR000429 | Proteinase inhibitor I14, hirudin | Family |
| IPR024793 | Thrombin inhibitor hirudin | Homologous Superfamily |
| IPR018992 | Thrombin light chain | Domain |
| IPR037111 | Thrombin light chain domain superfamily | Homologous Superfamily |
| IPR003966 | Prothrombin/thrombin | Family |
| IPR018114 | Serine proteases, trypsin family, histidine active site | Active Site |
| IPR009003 | Peptidase S1, PA clan | Homologous Superfamily |
| IPR033116 | Serine proteases, trypsin family, serine active site | Active Site |
| IPR001254 | Serine proteases, trypsin domain | Domain |
| IPR035972 | Gamma-carboxyglutamic acid-rich (GLA) domain superfamily | Homologous Superfamily |
| IPR000001 | Kringle | Domain |
| IPR000294 | Gamma-carboxyglutamic acid-rich (GLA) domain | Domain |
| IPR051659 | Serine Protease S1 Domain-Containing Protein | Family |
| IPR018056 | Kringle, conserved site | Conserved Site |
| IPR013806 | Kringle-like fold | Homologous Superfamily |
| IPR038178 | Kringle superfamily | Homologous Superfamily |
| IPR001314 | Peptidase S1A, chymotrypsin family | Family |
| IPR043504 | Peptidase S1, PA clan, chymotrypsin-like fold | Homologous Superfamily |
| IPR018992 | Thrombin light chain | Domain |
| IPR037111 | Thrombin light chain domain superfamily | Homologous Superfamily |
| IPR003966 | Prothrombin/thrombin | Family |
| IPR018114 | Serine proteases, trypsin family, histidine active site | Active Site |
| IPR009003 | Peptidase S1, PA clan | Homologous Superfamily |
| IPR033116 | Serine proteases, trypsin family, serine active site | Active Site |
| IPR001254 | Serine proteases, trypsin domain | Domain |
| IPR035972 | Gamma-carboxyglutamic acid-rich (GLA) domain superfamily | Homologous Superfamily |
| IPR000001 | Kringle | Domain |
| IPR000294 | Gamma-carboxyglutamic acid-rich (GLA) domain | Domain |
| IPR051659 | Serine Protease S1 Domain-Containing Protein | Family |
| IPR018056 | Kringle, conserved site | Conserved Site |
| IPR013806 | Kringle-like fold | Homologous Superfamily |
| IPR038178 | Kringle superfamily | Homologous Superfamily |
| IPR001314 | Peptidase S1A, chymotrypsin family | Family |
| IPR043504 | Peptidase S1, PA clan, chymotrypsin-like fold | Homologous Superfamily |