Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0020037 | molecular_function | heme binding |
| B | 0020037 | molecular_function | heme binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 26 |
| Details | BINDING SITE FOR RESIDUE HEM B 201 |
| Chain | Residue |
| A | ARG28 |
| B | SER57 |
| B | PHE58 |
| B | VAL61 |
| B | HIS63 |
| B | SER64 |
| B | ALA67 |
| B | MET70 |
| B | LEU71 |
| B | TYR74 |
| B | HOH100 |
| B | VAL32 |
| B | HOH126 |
| B | HOH142 |
| B | HOH150 |
| B | HOH216 |
| B | HOH218 |
| B | HOH262 |
| B | HOH288 |
| B | PHE35 |
| B | HIS39 |
| B | PRO40 |
| B | GLY41 |
| B | VAL45 |
| B | LEU46 |
| B | GLN49 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE MG B 301 |
| Chain | Residue |
| B | HOH88 |
| B | HOH90 |
| B | HOH91 |
| B | HOH93 |
| B | HOH95 |
| site_id | AC3 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE SO4 B 302 |
| Chain | Residue |
| A | LYS19 |
| A | ASP60 |
| B | ARG28 |
| B | LYS72 |
| B | TYR75 |
| B | HOH141 |
| B | HOH157 |
| B | HOH204 |
| site_id | AC4 |
| Number of Residues | 21 |
| Details | BINDING SITE FOR RESIDUE HEM A 201 |
| Chain | Residue |
| A | ILE25 |
| A | VAL32 |
| A | PHE35 |
| A | HIS39 |
| A | PRO40 |
| A | GLY41 |
| A | VAL45 |
| A | LEU46 |
| A | SER57 |
| A | PHE58 |
| A | VAL61 |
| A | HIS63 |
| A | SER64 |
| A | ALA67 |
| A | LEU71 |
| A | TYR74 |
| A | HOH129 |
| A | HOH175 |
| A | HOH205 |
| A | HOH294 |
| B | HIS26 |
Functional Information from PROSITE/UniProt
| site_id | PS00191 |
| Number of Residues | 8 |
| Details | CYTOCHROME_B5_1 Cytochrome b5 family, heme-binding domain signature. FLNEHPGG |
| Chain | Residue | Details |
| A | PHE35-GLY42 | |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| A | GLU43 | |
| A | ALA67 | |
| B | GLU43 | |
| B | ALA67 | |
| Chain | Residue | Details |
| A | TYR7 | |
| B | TYR7 | |
| Chain | Residue | Details |
| A | LEU18 | |
| B | LEU18 | |
| Chain | Residue | Details |
| A | LEU21 | |
| A | ARG68 | |
| B | LEU21 | |
| B | ARG68 | |
| Chain | Residue | Details |
| A | LEU23 | |
| B | LEU23 | |
