Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 18 |
| Details | binding site for residue HEM B 201 |
| Chain | Residue |
| B | GLU31 |
| B | LEU92 |
| B | ASN96 |
| B | PHE97 |
| B | OXY202 |
| B | HOH311 |
| B | HOH317 |
| B | HOH325 |
| B | HOH343 |
| B | HOH347 |
| B | TYR34 |
| B | PHE35 |
| B | HIS55 |
| B | LYS58 |
| B | VAL59 |
| B | MET86 |
| B | GLN88 |
| B | HIS89 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | binding site for residue OXY B 202 |
| Chain | Residue |
| B | PHE21 |
| B | HIS55 |
| B | VAL59 |
| B | HEM201 |
| site_id | AC3 |
| Number of Residues | 9 |
| Details | binding site for residue GOL B 203 |
| Chain | Residue |
| A | ASN26 |
| A | HOH324 |
| B | GLN4 |
| B | ASP5 |
| B | THR8 |
| B | GLN113 |
| B | SER114 |
| B | PHE115 |
| B | HOH304 |
| site_id | AC4 |
| Number of Residues | 16 |
| Details | binding site for residue HEM A 201 |
| Chain | Residue |
| A | GLU31 |
| A | TYR34 |
| A | PHE35 |
| A | HIS55 |
| A | LYS58 |
| A | VAL59 |
| A | MET63 |
| A | MET86 |
| A | GLN88 |
| A | HIS89 |
| A | LEU92 |
| A | ASN96 |
| A | PHE97 |
| A | LEU127 |
| A | OXY204 |
| A | HOH362 |
| site_id | AC5 |
| Number of Residues | 10 |
| Details | binding site for residue SO4 A 202 |
| Chain | Residue |
| A | GLY1 |
| A | PHE2 |
| A | LYS3 |
| A | HOH311 |
| A | HOH313 |
| A | HOH330 |
| A | HOH345 |
| B | ARG32 |
| B | VAL39 |
| B | GLY40 |
| site_id | AC6 |
| Number of Residues | 9 |
| Details | binding site for residue SO4 A 203 |
| Chain | Residue |
| A | ARG32 |
| A | GLY40 |
| A | HOH373 |
| A | HOH395 |
| B | GLY1 |
| B | PHE2 |
| B | LYS3 |
| B | HOH336 |
| B | HOH413 |
| site_id | AC7 |
| Number of Residues | 5 |
| Details | binding site for residue OXY A 204 |
| Chain | Residue |
| A | PHE21 |
| A | PHE35 |
| A | HIS55 |
| A | VAL59 |
| A | HEM201 |
