Functional Information from GO Data
| Chain | GOid | namespace | contents |
| B | 0020037 | molecular_function | heme binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 20 |
| Details | BINDING SITE FOR RESIDUE HEM B 201 |
| Chain | Residue |
| B | LYS19 |
| B | GLN49 |
| B | SER57 |
| B | PHE58 |
| B | VAL61 |
| B | HIS63 |
| B | SER64 |
| B | ALA67 |
| B | LEU71 |
| B | HOH87 |
| B | HOH200 |
| B | MET23 |
| B | HOH208 |
| B | ILE32 |
| B | PHE35 |
| B | HIS39 |
| B | PRO40 |
| B | GLY41 |
| B | VAL45 |
| B | LEU46 |
Functional Information from PROSITE/UniProt
| site_id | PS00191 |
| Number of Residues | 8 |
| Details | CYTOCHROME_B5_1 Cytochrome b5 family, heme-binding domain signature. FLSEHPGG |
| Chain | Residue | Details |
| B | PHE35-GLY42 | |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| B | HIS39 | |
| B | HIS63 | |
| Chain | Residue | Details |
| B | LYS5 | |
| B | LYS14 | |
