Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004867 | molecular_function | serine-type endopeptidase inhibitor activity |
| A | 0005576 | cellular_component | extracellular region |
| A | 0005615 | cellular_component | extracellular space |
| A | 0015459 | molecular_function | potassium channel regulator activity |
| A | 0035821 | biological_process | modulation of process of another organism |
| A | 0090729 | molecular_function | toxin activity |
| A | 0099106 | molecular_function | ion channel regulator activity |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 A 60 |
| Chain | Residue |
| A | ARG3 |
| A | ARG4 |
| A | ARG15 |
| A | CYS40 |
| A | GLY41 |
| A | HOH84 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO4 A 61 |
| Chain | Residue |
| A | GLY41 |
| A | GLY42 |
| A | HOH65 |
| A | ASN12 |
| A | GLY14 |
| A | ARG15 |
| site_id | AC3 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 A 62 |
| Chain | Residue |
| A | HIS10 |
| A | LYS30 |
| A | ILE50 |
| A | ARG54 |
| A | HOH72 |
| site_id | AC4 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 A 63 |
| Chain | Residue |
| A | ARG4 |
| A | LYS5 |
| A | TRP37 |
| A | HOH73 |
| A | HOH96 |
| site_id | AC5 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 A 64 |
| Chain | Residue |
| A | TYR17 |
| A | TRP37 |
| A | ARG46 |
| A | PHE47 |
| A | LYS48 |
Functional Information from PROSITE/UniProt
| site_id | PS00280 |
| Number of Residues | 19 |
| Details | BPTI_KUNITZ_1 Pancreatic trypsin inhibitor (Kunitz) family signature. FdwSGCggnsnrFktieeC |
| Chain | Residue | Details |
| A | PHE35-CYS53 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 1 |
| Details | Site: {"description":"May be the major determinant of the binding affinity for potassium channels"} |
| site_id | SWS_FT_FI2 |
| Number of Residues | 1 |
| Details | Site: {"description":"Important for binding to potassium channels"} |
| site_id | SWS_FT_FI3 |
| Number of Residues | 1 |
| Details | Site: {"description":"Not important for inhibition of potassium channels"} |
