Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 8 |
| Details | binding site for residue ACH A 301 |
| Chain | Residue |
| A | PHE12 |
| A | TYR65 |
| A | ASN109 |
| A | TYR111 |
| A | TRP190 |
| A | TYR214 |
| A | SPD303 |
| A | HOH401 |
| site_id | AC2 |
| Number of Residues | 8 |
| Details | binding site for residue NHE A 302 |
| Chain | Residue |
| A | ILE16 |
| A | GLU92 |
| A | ARG95 |
| A | GLY173 |
| A | ASP255 |
| A | HOH411 |
| A | HOH416 |
| A | THR13 |
| site_id | AC3 |
| Number of Residues | 11 |
| Details | binding site for residue SPD A 303 |
| Chain | Residue |
| A | VAL43 |
| A | GLU64 |
| A | TYR65 |
| A | HIS68 |
| A | TYR111 |
| A | PHE145 |
| A | GLY149 |
| A | ASP151 |
| A | ACH301 |
| A | HOH401 |
| A | HOH439 |
| site_id | AC4 |
| Number of Residues | 5 |
| Details | binding site for residue PEG A 304 |
| Chain | Residue |
| A | ASN181 |
| A | GLU183 |
| A | LYS249 |
| A | TYR252 |
| A | HOH463 |