Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 8 |
| Details | binding site for residue SF4 A 501 |
| Chain | Residue |
| A | CYS23 |
| A | GLY26 |
| A | CYS28 |
| A | CYS31 |
| A | GLY68 |
| A | HIS98 |
| A | LYS136 |
| A | SAM503 |
| site_id | AC2 |
| Number of Residues | 15 |
| Details | binding site for residue QUG A 502 |
| Chain | Residue |
| A | ASP36 |
| A | ILE65 |
| A | SER67 |
| A | GLU96 |
| A | LYS119 |
| A | ASN184 |
| A | PRO222 |
| A | GLY228 |
| A | ASP229 |
| A | SAM503 |
| A | HOH636 |
| A | HOH658 |
| A | HOH685 |
| A | HOH705 |
| A | TYR33 |
| site_id | AC3 |
| Number of Residues | 20 |
| Details | binding site for residue SAM A 503 |
| Chain | Residue |
| A | PHE30 |
| A | TYR33 |
| A | GLY68 |
| A | GLU96 |
| A | HIS98 |
| A | GLY121 |
| A | GLU123 |
| A | LYS136 |
| A | SMC154 |
| A | MET156 |
| A | ASN184 |
| A | ILE185 |
| A | TYR186 |
| A | ARG187 |
| A | ASN189 |
| A | SF4501 |
| A | QUG502 |
| A | HOH649 |
| A | HOH709 |
| A | HOH718 |
