Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004867 | molecular_function | serine-type endopeptidase inhibitor activity |
| B | 0004867 | molecular_function | serine-type endopeptidase inhibitor activity |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 10 |
| Details | binding site for residue SO4 A 101 |
| Chain | Residue |
| A | GLU7 |
| A | HOH279 |
| A | LYS41 |
| A | ARG42 |
| A | HOH204 |
| A | HOH226 |
| A | HOH231 |
| A | HOH245 |
| A | HOH246 |
| A | HOH261 |
| site_id | AC2 |
| Number of Residues | 11 |
| Details | binding site for residue SO4 A 102 |
| Chain | Residue |
| A | ASP3 |
| A | PHE4 |
| A | ARG42 |
| A | HOH219 |
| A | HOH229 |
| A | HOH237 |
| A | HOH239 |
| A | HOH253 |
| A | HOH264 |
| B | LYS15 |
| B | HOH208 |
| site_id | AC3 |
| Number of Residues | 12 |
| Details | binding site for residue SO4 A 103 |
| Chain | Residue |
| A | TYR10 |
| A | ARG39 |
| A | HOH201 |
| A | HOH203 |
| A | HOH266 |
| A | HOH296 |
| B | ARG20 |
| B | TYR35 |
| B | GLY37 |
| B | ALA40 |
| B | HOH237 |
| B | HOH275 |
| site_id | AC4 |
| Number of Residues | 12 |
| Details | binding site for residue SO4 A 104 |
| Chain | Residue |
| A | ARG20 |
| A | TYR35 |
| A | GLY37 |
| A | ALA40 |
| A | HOH214 |
| A | HOH224 |
| A | HOH230 |
| A | HOH288 |
| A | HOH290 |
| B | ARG39 |
| B | HOH201 |
| B | HOH318 |
| site_id | AC5 |
| Number of Residues | 7 |
| Details | binding site for residue SO4 B 101 |
| Chain | Residue |
| B | LYS41 |
| B | ARG42 |
| B | HOH218 |
| B | HOH224 |
| B | HOH235 |
| B | HOH239 |
| B | HOH251 |
| site_id | AC6 |
| Number of Residues | 10 |
| Details | binding site for residue SO4 B 102 |
| Chain | Residue |
| A | LYS15 |
| A | HOH205 |
| A | HOH276 |
| B | ASP3 |
| B | PHE4 |
| B | ARG42 |
| B | HOH211 |
| B | HOH215 |
| B | HOH223 |
| B | HOH226 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 2 |
| Details | SITE: Reactive bond for trypsin |
| Chain | Residue | Details |
| A | LYS15 | |
| B | LYS15 | |
