Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 5 |
| Details | binding site for residue SPM A 201 |
| Chain | Residue |
| A | ASN146 |
| A | ILE148 |
| A | 1PE202 |
| A | HOH303 |
| B | SPM201 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | binding site for residue 1PE A 202 |
| Chain | Residue |
| A | HOH316 |
| A | VAL109 |
| A | SER110 |
| A | ARG111 |
| A | SPM201 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | binding site for residue PEG A 203 |
| Chain | Residue |
| A | MET1 |
| A | HOH302 |
| A | HOH309 |
| B | ARG162 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | binding site for residue SPM B 201 |
| Chain | Residue |
| A | MET1 |
| A | SPM201 |
| B | PRO38 |
| B | HOH307 |
| site_id | AC5 |
| Number of Residues | 3 |
| Details | binding site for residue PEG B 202 |
| Chain | Residue |
| A | TYR15 |
| B | PRO70 |
| B | PRO158 |
| site_id | AC6 |
| Number of Residues | 3 |
| Details | binding site for residue SPM D 201 |
| Chain | Residue |
| D | MET1 |
| D | ASN146 |
| D | HOH308 |
| site_id | AC7 |
| Number of Residues | 5 |
| Details | binding site for residue 1PE D 202 |
| Chain | Residue |
| D | VAL109 |
| D | SER110 |
| D | LEU160 |
| D | HOH317 |
| D | HOH318 |
