Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 6 |
| Details | binding site for residue PE4 A 101 |
| Chain | Residue |
| A | TRP16 |
| A | LYS20 |
| A | SER23 |
| A | ASP33 |
| A | ARG37 |
| A | GLN40 |
| site_id | AC2 |
| Number of Residues | 3 |
| Details | binding site for residue PE4 A 102 |
| Chain | Residue |
| A | TRP16 |
| A | GLN40 |
| A | THR58 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | binding site for residue PE4 A 103 |
| Chain | Residue |
| A | SER48 |
| B | TRP16 |
| B | LYS20 |
| B | GLN40 |
| site_id | AC4 |
| Number of Residues | 9 |
| Details | binding site for residue NHE A 104 |
| Chain | Residue |
| A | GLY51 |
| A | LEU52 |
| A | ASP53 |
| A | VAL56 |
| A | HOH201 |
| B | ARG37 |
| B | LYS41 |
| D | G8 |
| D | HOH104 |
| site_id | AC5 |
| Number of Residues | 10 |
| Details | binding site for residue PE4 B 101 |
| Chain | Residue |
| A | ASP12 |
| A | LEU15 |
| A | ARG19 |
| A | ASP39 |
| A | HOH211 |
| B | ASP12 |
| B | LEU15 |
| B | ARG19 |
| B | ASP39 |
| B | HOH208 |
| site_id | AC6 |
| Number of Residues | 5 |
| Details | binding site for residue PE4 B 102 |
| Chain | Residue |
| B | TRP16 |
| B | HIS17 |
| B | GLN40 |
| B | LYS44 |
| B | THR58 |
