Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 12 |
| Details | binding site for residue OPE A 501 |
| Chain | Residue |
| A | MET26 |
| A | SAH502 |
| A | HOH632 |
| A | HOH637 |
| A | TRP123 |
| A | MET126 |
| A | TYR127 |
| A | SER155 |
| A | PRO159 |
| A | SER160 |
| A | HIS170 |
| A | TYR180 |
| site_id | AC2 |
| Number of Residues | 18 |
| Details | binding site for residue SAH A 502 |
| Chain | Residue |
| A | TRP14 |
| A | MET26 |
| A | GLY59 |
| A | GLY61 |
| A | ARG64 |
| A | ASP80 |
| A | PHE81 |
| A | ILE82 |
| A | PHE85 |
| A | SER104 |
| A | ASP105 |
| A | ALA106 |
| A | ASN122 |
| A | TRP123 |
| A | OPE501 |
| A | HOH633 |
| A | HOH641 |
| A | HOH676 |
| site_id | AC3 |
| Number of Residues | 13 |
| Details | binding site for residue OPE B 501 |
| Chain | Residue |
| B | MET26 |
| B | MET27 |
| B | LEU28 |
| B | TRP123 |
| B | MET126 |
| B | TYR127 |
| B | SER155 |
| B | PRO159 |
| B | SER160 |
| B | HIS170 |
| B | TYR180 |
| B | HOH612 |
| B | HOH625 |
| site_id | AC4 |
| Number of Residues | 18 |
| Details | binding site for residue SAH B 502 |
| Chain | Residue |
| B | TRP14 |
| B | MET26 |
| B | GLY59 |
| B | ALA60 |
| B | GLY61 |
| B | ARG64 |
| B | PHE65 |
| B | ASP80 |
| B | PHE81 |
| B | ILE82 |
| B | PHE85 |
| B | SER104 |
| B | ASP105 |
| B | ALA106 |
| B | ASN122 |
| B | TRP123 |
| B | HOH642 |
| B | HOH658 |
