Functional Information from GO Data
| Chain | GOid | namespace | contents |
| E | 0004252 | molecular_function | serine-type endopeptidase activity |
| E | 0006508 | biological_process | proteolysis |
| I | 0004867 | molecular_function | serine-type endopeptidase inhibitor activity |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE PO4 E 500 |
| Chain | Residue |
| I | LYS55 |
| E | TYR32 |
| E | ARG41 |
| E | HOH594 |
| I | TYR20 |
| site_id | ACT |
| Number of Residues | 3 |
| Details | ACTIVE SITE OF ENZYME |
| Chain | Residue |
| E | HIS57 |
| E | ASP102 |
| E | SER195 |
| site_id | REA |
| Number of Residues | 2 |
| Details | REACTIVE SITE OF INHIBITOR |
Functional Information from PROSITE/UniProt
| site_id | PS00134 |
| Number of Residues | 6 |
| Details | TRYPSIN_HIS Serine proteases, trypsin family, histidine active site. LTAGHC |
| Chain | Residue | Details |
| E | LEU53-CYS58 | |
| site_id | PS00135 |
| Number of Residues | 12 |
| Details | TRYPSIN_SER Serine proteases, trypsin family, serine active site. CAepGDSGGPLY |
| Chain | Residue | Details |
| E | CYS191-TYR200 | |
| site_id | PS00282 |
| Number of Residues | 23 |
| Details | KAZAL_1 Kazal serine protease inhibitors family signature. CtyeyRplCgSdnktYgnkCnf.C |
| Chain | Residue | Details |
| I | CYS16-CYS38 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | SITE: Reactive bond 3 for chymotrypsin, elastase, proteases A and B, and subtilisin |
| Chain | Residue | Details |
| I | TYR18 | |
| E | ASP102 | |
| E | SER195 | |
| site_id | SWS_FT_FI2 |
| Number of Residues | 1 |
| Details | CARBOHYD: N-linked (GlcNAc...) asparagine |
| Chain | Residue | Details |
| I | ASN45 | |
Catalytic Information from CSA
| site_id | CSA1 |
| Number of Residues | 5 |
| Details | Annotated By Reference To The Literature 1ssx |
| Chain | Residue | Details |
| E | ASP102 | |
| E | SER195 | |
| E | GLY193 | |
| E | HIS57 | |
| E | SER214 | |
| site_id | CSA2 |
| Number of Residues | 4 |
| Details | Annotated By Reference To The Literature 1ssx |
| Chain | Residue | Details |
| E | ASP102 | |
| E | SER195 | |
| E | GLY193 | |
| E | HIS57 | |
| site_id | MCSA1 |
| Number of Residues | 5 |
| Details | M-CSA 608 |
| Chain | Residue | Details |
| E | HIS57 | proton acceptor, proton donor |
| E | ASP102 | electrostatic stabiliser |
| E | GLY193 | electrostatic stabiliser |
| E | SER195 | nucleofuge, nucleophile, proton acceptor, proton donor |
| E | SER214 | electrostatic stabiliser |
