Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0020037 | molecular_function | heme binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE SO4 A 83 |
| Chain | Residue |
| A | LYS46 |
| A | GLN67 |
| A | SER68 |
| A | HOH510 |
| A | HOH525 |
| A | HOH527 |
| A | HOH577 |
| A | HOH596 |
| site_id | AC2 |
| Number of Residues | 14 |
| Details | BINDING SITE FOR RESIDUE HEM A 502 |
| Chain | Residue |
| A | PRO41 |
| A | LYS46 |
| A | LEU47 |
| A | TRP59 |
| A | TYR62 |
| A | HIS65 |
| A | GLN67 |
| A | HIS69 |
| A | HOH539 |
| A | HOH546 |
| A | HOH573 |
| A | HOH584 |
| A | GOL9601 |
| A | HIS40 |
| site_id | AC3 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE GOL A 9601 |
| Chain | Residue |
| A | PRO41 |
| A | HIS69 |
| A | ARG71 |
| A | HEM502 |
| A | HOH513 |
| A | HOH518 |
| A | HOH530 |
| A | HOH531 |
Functional Information from PROSITE/UniProt
| site_id | PS00191 |
| Number of Residues | 8 |
| Details | CYTOCHROME_B5_1 Cytochrome b5 family, heme-binding domain signature. FVDLHPGG |
| Chain | Residue | Details |
| A | PHE36-GLY43 | |
