Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE FLC A 201 |
| Chain | Residue |
| A | ARG14 |
| A | ASN30 |
| A | ARG61 |
| A | LYS67 |
| A | VAL68 |
| A | SER69 |
| A | PHE75 |
| B | HOH322 |
| site_id | AC2 |
| Number of Residues | 11 |
| Details | BINDING SITE FOR RESIDUE ETX A 202 |
| Chain | Residue |
| A | GLN41 |
| A | ASN42 |
| A | TYR78 |
| A | ARG79 |
| A | HOH307 |
| A | HOH350 |
| B | SER67 |
| B | LEU70 |
| B | GLU71 |
| B | HOH320 |
| A | PHE40 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ETX A 203 |
| Chain | Residue |
| A | LYS15 |
| A | ALA66 |
| B | LYS74 |
| B | GLU126 |
| site_id | AC4 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE ETX A 204 |
| site_id | AC5 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE ETX A 205 |
| Chain | Residue |
| A | GLY24 |
| A | GLY28 |
| A | GLY29 |
| A | GLY32 |
| A | LYS33 |
| A | HOH314 |
| A | HOH327 |
| site_id | AC6 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ETX A 206 |
| Chain | Residue |
| A | ASN2 |
| A | PHE57 |
| A | PRO58 |
| A | THR90 |
| site_id | AC7 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE ETX B 201 |
| Chain | Residue |
| B | SER35 |
| B | GLN36 |
| B | SER37 |
| B | ARG124 |
| B | ETX202 |
| site_id | AC8 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ETX B 202 |
| Chain | Residue |
| B | SER37 |
| B | LYS122 |
| B | ARG124 |
| B | ETX201 |
| site_id | AC9 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE ETX B 203 |
| Chain | Residue |
| B | ASN42 |
| B | ILE112 |
| B | HIS113 |
| site_id | BC1 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE ETX B 204 |
| Chain | Residue |
| B | LEU51 |
| B | LYS59 |
| B | ETX206 |
| site_id | BC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE ETX B 205 |
| Chain | Residue |
| A | SER5 |
| A | PRO161 |
| B | GLU82 |
| site_id | BC3 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE ETX B 206 |
| Chain | Residue |
| A | GLY37 |
| A | GLY38 |
| B | HIS47 |
| B | ALA50 |
| B | LEU51 |
| B | ARG63 |
| B | ALA66 |
| B | ETX204 |
| B | HOH314 |
| site_id | BC4 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE ETX B 207 |
| Chain | Residue |
| B | TYR53 |
| B | LYS54 |
| B | ASP55 |
| B | ASP55 |
| B | VAL57 |
| B | VAL58 |
| B | HOH339 |
| B | HOH348 |
