Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 13 |
| Details | binding site for residue 4CT A 501 |
| Chain | Residue |
| A | TYR301 |
| A | GLU385 |
| A | TYR386 |
| A | GLU387 |
| A | HOH699 |
| A | ARG302 |
| A | ARG303 |
| A | SER345 |
| A | SER347 |
| A | MET353 |
| A | PHE356 |
| A | ARG359 |
| A | GLY384 |
| site_id | AC2 |
| Number of Residues | 18 |
| Details | binding site for residue 4CT B 602 |
| Chain | Residue |
| B | GLU44 |
| B | GLU47 |
| B | SER48 |
| B | LYS51 |
| B | TYR301 |
| B | ARG302 |
| B | ARG303 |
| B | SER345 |
| B | THR346 |
| B | SER347 |
| B | PHE356 |
| B | ARG359 |
| B | GLY384 |
| B | GLU385 |
| B | GLU387 |
| B | AR6601 |
| B | HOH764 |
| B | HOH812 |
| site_id | AC3 |
| Number of Residues | 25 |
| Details | binding site for Di-peptide AR6 B 601 and ARG B 40 |
| Chain | Residue |
| B | GLU39 |
| B | SER41 |
| B | GLU42 |
| B | LYS43 |
| B | GLU44 |
| B | TYR258 |
| B | ILE266 |
| B | ARG302 |
| B | GLY305 |
| B | GLN307 |
| B | GLU308 |
| B | TYR340 |
| B | ASN342 |
| B | SER345 |
| B | ALA355 |
| B | PHE356 |
| B | ARG359 |
| B | 4CT602 |
| B | HOH706 |
| B | HOH735 |
| B | HOH770 |
| B | HOH816 |
| B | HOH886 |
| B | HOH892 |
| B | HOH898 |
