Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004252 | molecular_function | serine-type endopeptidase activity |
| A | 0006508 | biological_process | proteolysis |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 10 |
| Details | BINDING SITE FOR RESIDUE SO4 A 2 |
| Chain | Residue |
| A | ARG48 |
| A | HOH499 |
| A | GLN237 |
| A | TYR238 |
| A | HOH272 |
| A | HOH273 |
| A | HOH274 |
| A | HOH440 |
| A | HOH441 |
| A | HOH442 |
| site_id | AC2 |
| Number of Residues | 10 |
| Details | BINDING SITE FOR RESIDUE SO4 A 3 |
| Chain | Residue |
| A | ALA15 |
| A | ASN15 |
| A | ARG230 |
| A | PRO233 |
| A | HOH248 |
| A | HOH323 |
| A | HOH400 |
| A | HOH401 |
| A | HOH460 |
| A | HOH462 |
| site_id | AC3 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE SO4 A 4 |
| Chain | Residue |
| A | HIS57 |
| A | ARG122 |
| A | GLY193 |
| A | SER195 |
| A | HOH406 |
| A | HOH421 |
| A | HOH422 |
| A | HOH423 |
| A | HOH544 |
| site_id | AC4 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE TAM A 1 |
| Chain | Residue |
| A | HIS57 |
| A | ARG122 |
| A | TYR171 |
| A | GLU174 |
| A | SER214 |
| A | GLY215 |
| A | HOH339 |
| A | HOH340 |
| A | HOH341 |
| A | HOH342 |
| A | HOH407 |
| A | HOH504 |
Functional Information from PROSITE/UniProt
| site_id | PS00134 |
| Number of Residues | 6 |
| Details | TRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VTAGHC |
| Chain | Residue | Details |
| A | VAL53-CYS58 | |
| site_id | PS00135 |
| Number of Residues | 12 |
| Details | TRYPSIN_SER Serine proteases, trypsin family, serine active site. CMgrGDSGGSWI |
| Chain | Residue | Details |
| A | CYS189-ILE200 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 3 |
| Details | ACT_SITE: Charge relay system => ECO:0000250 |
| Chain | Residue | Details |
| A | HIS57 | |
| A | ASP102 | |
| A | SER195 | |
Catalytic Information from CSA
| site_id | CSA1 |
| Number of Residues | 5 |
| Details | Annotated By Reference To The Literature 1ssx |
| Chain | Residue | Details |
| A | ASP102 | |
| A | SER195 | |
| A | GLY193 | |
| A | HIS57 | |
| A | SER214 | |
| site_id | CSA2 |
| Number of Residues | 4 |
| Details | Annotated By Reference To The Literature 1ssx |
| Chain | Residue | Details |
| A | ASP102 | |
| A | SER195 | |
| A | GLY193 | |
| A | HIS57 | |
| site_id | MCSA1 |
| Number of Residues | 5 |
| Details | M-CSA 609 |
| Chain | Residue | Details |
| A | HIS57 | proton acceptor, proton donor |
| A | ASP102 | electrostatic stabiliser |
| A | GLY193 | electrostatic stabiliser |
| A | SER195 | electrostatic stabiliser |
| A | SER214 | electrostatic stabiliser |
