Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 10 |
| Details | binding site for residue PG4 A 301 |
| Chain | Residue |
| A | GLU4 |
| A | HOH408 |
| A | LEU7 |
| A | GLU8 |
| A | LYS11 |
| A | GLU45 |
| A | GLU58 |
| A | ARG65 |
| A | GLU88 |
| A | ARG92 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | binding site for residue PG4 A 302 |
| Chain | Residue |
| A | GLU15 |
| A | ARG18 |
| A | GLU34 |
| A | LYS41 |
| A | LYS81 |
| A | SER85 |
| site_id | AC3 |
| Number of Residues | 8 |
| Details | binding site for residue PG4 A 303 |
| Chain | Residue |
| A | GLU84 |
| A | GLU88 |
| A | LYS91 |
| A | LYS131 |
| A | SER135 |
| A | GLU138 |
| A | HOH407 |
| A | HOH412 |
| site_id | AC4 |
| Number of Residues | 10 |
| Details | binding site for residue NHE A 304 |
| Chain | Residue |
| A | ARG18 |
| A | ARG65 |
| A | GLU68 |
| A | LEU69 |
| A | LYS72 |
| A | GLU77 |
| A | LYS81 |
| A | GLU84 |
| A | LYS131 |
| A | HOH403 |
