Functional Information from GO Data
| Chain | GOid | namespace | contents |
| I | 0004867 | molecular_function | serine-type endopeptidase inhibitor activity |
| Z | 0004175 | molecular_function | endopeptidase activity |
| Z | 0004252 | molecular_function | serine-type endopeptidase activity |
| Z | 0005515 | molecular_function | protein binding |
| Z | 0005576 | cellular_component | extracellular region |
| Z | 0005615 | cellular_component | extracellular space |
| Z | 0006508 | biological_process | proteolysis |
| Z | 0007586 | biological_process | digestion |
| Z | 0008233 | molecular_function | peptidase activity |
| Z | 0008236 | molecular_function | serine-type peptidase activity |
| Z | 0016787 | molecular_function | hydrolase activity |
| Z | 0046872 | molecular_function | metal ion binding |
| Z | 0097180 | cellular_component | serine protease inhibitor complex |
| Z | 0097655 | molecular_function | serpin family protein binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE ILE Z 1016 |
| Chain | Residue |
| Z | GLY19 |
| Z | HOH429 |
| Z | HOH430 |
| Z | VAL1017 |
| Z | GLY142 |
| Z | ASN143 |
| Z | THR144 |
| Z | LYS156 |
| Z | LEU158 |
| Z | ASP189 |
| Z | CYS191 |
| Z | ASP194 |
| site_id | AC2 |
| Number of Residues | 11 |
| Details | BINDING SITE FOR RESIDUE VAL Z 1017 |
| Chain | Residue |
| Z | HG1 |
| Z | GLY19 |
| Z | ASN143 |
| Z | THR144 |
| Z | LYS188 |
| Z | GLY188 |
| Z | ASP189 |
| Z | CYS191 |
| Z | CYS220 |
| Z | HOH456 |
| Z | ILE1016 |
| site_id | AC3 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE HG Z 1 |
| Chain | Residue |
| Z | ASN143 |
| Z | LYS145 |
| Z | SER146 |
| Z | CYS191 |
| Z | CYS220 |
| Z | HOH596 |
| Z | VAL1017 |
Functional Information from PROSITE/UniProt
| site_id | PS00280 |
| Number of Residues | 19 |
| Details | BPTI_KUNITZ_1 Pancreatic trypsin inhibitor (Kunitz) family signature. FvyGGCrakrnnFksaedC |
| Chain | Residue | Details |
| I | PHE33-CYS51 | |
| site_id | PS00134 |
| Number of Residues | 6 |
| Details | TRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC |
| Chain | Residue | Details |
| Z | VAL53-CYS58 | |
| site_id | PS00135 |
| Number of Residues | 12 |
| Details | TRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV |
| Chain | Residue | Details |
| Z | ASP189-VAL200 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | SITE: Reactive bond for trypsin |
| Chain | Residue | Details |
| I | LYS15 | |
| Z | LEU105 | |
| Z | PRO198 | |
| site_id | SWS_FT_FI2 |
| Number of Residues | 7 |
| Details | BINDING: |
| Chain | Residue | Details |
| Z | ILE73 | |
| Z | VAL75 | |
| Z | GLY78 | |
| Z | ILE83 | |
| Z | GLN192 | |
| Z | SER195 | |
| Z | PRO198 | |
