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 | 6 |
| Details | BINDING SITE FOR RESIDUE MG A 301 |
| Chain | Residue |
| A | HOH328 |
| A | HOH393 |
| A | HOH400 |
| A | HOH422 |
| A | HOH427 |
| A | HOH462 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE MG A 302 |
| Chain | Residue |
| A | HOH426 |
| A | HOH458 |
| A | HOH360 |
| A | HOH382 |
| A | HOH412 |
| site_id | AC3 |
| Number of Residues | 27 |
| Details | BINDING SITE FOR RESIDUE HEM A 201 |
| Chain | Residue |
| A | TYR6 |
| A | PHE23 |
| A | VAL32 |
| A | PHE35 |
| A | HIS39 |
| A | PRO40 |
| A | GLY41 |
| A | VAL45 |
| A | LEU46 |
| A | GLN49 |
| A | PHE58 |
| A | VAL61 |
| A | HIS63 |
| A | SER64 |
| A | ALA67 |
| A | MET70 |
| A | MET71 |
| A | TYR74 |
| A | VAL80 |
| A | ALA81 |
| A | HOH312 |
| A | HOH326 |
| A | HOH356 |
| A | HOH364 |
| A | HOH395 |
| A | HOH424 |
| A | HOH445 |
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 | HIS39 | |
| A | HIS63 | |
