Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 4 |
| Details | binding site for residue BU1 A 2001 |
| Chain | Residue |
| A | GLY1870 |
| A | HIS1911 |
| A | GLU1912 |
| A | HIS1954 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | binding site for residue BU1 A 2002 |
| Chain | Residue |
| A | ASP1772 |
| A | VAL1773 |
| A | THR1774 |
| A | ALA1924 |
| site_id | AC3 |
| Number of Residues | 10 |
| Details | binding site for residue BU1 A 2003 |
| Chain | Residue |
| A | MET1852 |
| A | TYR1856 |
| A | PHE1905 |
| A | TYR1909 |
| A | PRO1917 |
| A | PHE1918 |
| A | PRO1920 |
| A | MG2004 |
| A | HOH2194 |
| A | HIS1735 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | binding site for residue MG A 2004 |
| Chain | Residue |
| A | GLY1745 |
| A | PRO1920 |
| A | BU12003 |
| A | HOH2216 |
