Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0020037 | molecular_function | heme binding |
| B | 0020037 | molecular_function | heme binding |
| C | 0020037 | molecular_function | heme binding |
| D | 0020037 | molecular_function | heme binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE MG A 401 |
| Chain | Residue |
| A | HOH454 |
| B | HOH702 |
| B | HOH703 |
| C | HOH802 |
| C | HOH803 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE MG C 402 |
| Chain | Residue |
| D | HOH902 |
| D | HOH903 |
| A | HOH402 |
| A | HOH403 |
| C | HOH804 |
| C | HOH805 |
| site_id | AC3 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE MG B 403 |
| Chain | Residue |
| B | VAL61 |
| B | GLY62 |
| B | HOH704 |
| B | HOH705 |
| B | HOH706 |
| B | HOH707 |
| B | HOH745 |
| site_id | AC4 |
| Number of Residues | 21 |
| Details | BINDING SITE FOR RESIDUE HEM A 201 |
| Chain | Residue |
| A | SER-1 |
| A | PRO2 |
| A | MET23 |
| A | LEU25 |
| A | LEU32 |
| A | PHE35 |
| A | HIS39 |
| A | PRO40 |
| A | GLY41 |
| A | VAL45 |
| A | LEU46 |
| A | ALA54 |
| A | PHE58 |
| A | VAL61 |
| A | HIS63 |
| A | SER64 |
| A | ALA67 |
| A | MET70 |
| A | SER71 |
| A | HOH409 |
| A | HOH410 |
| site_id | AC5 |
| Number of Residues | 23 |
| Details | BINDING SITE FOR RESIDUE HEM B 701 |
| Chain | Residue |
| B | MET23 |
| B | LEU25 |
| B | LEU32 |
| B | PHE35 |
| B | HIS39 |
| B | GLY41 |
| B | VAL45 |
| B | LEU46 |
| B | GLN49 |
| B | ALA54 |
| B | PHE58 |
| B | VAL61 |
| B | HIS63 |
| B | SER64 |
| B | ALA67 |
| B | MET70 |
| B | SER71 |
| B | HOH705 |
| B | HOH706 |
| B | HOH745 |
| B | HOH747 |
| C | SER57 |
| C | HOH830 |
| site_id | AC6 |
| Number of Residues | 24 |
| Details | BINDING SITE FOR RESIDUE HEM C 801 |
| Chain | Residue |
| B | PRO40 |
| B | GLY41 |
| B | GLY42 |
| B | GLU43 |
| B | GLU44 |
| C | MET23 |
| C | LEU25 |
| C | PHE35 |
| C | HIS39 |
| C | PRO40 |
| C | GLY41 |
| C | VAL45 |
| C | LEU46 |
| C | GLN49 |
| C | ALA54 |
| C | SER57 |
| C | PHE58 |
| C | VAL61 |
| C | HIS63 |
| C | SER64 |
| C | ALA67 |
| C | SER71 |
| C | HOH816 |
| C | HOH842 |
| site_id | AC7 |
| Number of Residues | 18 |
| Details | BINDING SITE FOR RESIDUE HEM D 901 |
| Chain | Residue |
| D | ALA67 |
| D | MET70 |
| D | SER71 |
| D | HOH931 |
| D | HOH951 |
| D | MET23 |
| D | LEU25 |
| D | PHE35 |
| D | HIS39 |
| D | PRO40 |
| D | GLY41 |
| D | VAL45 |
| D | LEU46 |
| D | GLN49 |
| D | PHE58 |
| D | VAL61 |
| D | HIS63 |
| D | SER64 |
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 |
| A | PHE35-GLY42 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 304 |
| Details | Domain: {"description":"Cytochrome b5 heme-binding","evidences":[{"source":"PROSITE-ProRule","id":"PRU00279","evidenceCode":"ECO:0000255"}]} |
| site_id | SWS_FT_FI2 |
| Number of Residues | 8 |
| Details | Binding site: {"description":"axial binding residue"} |
| site_id | SWS_FT_FI3 |
| Number of Residues | 4 |
| Details | Modified residue: {"description":"N6-acetyllysine","evidences":[{"source":"UniProtKB","id":"O43169","evidenceCode":"ECO:0000250"}]} |
| site_id | SWS_FT_FI4 |
| Number of Residues | 4 |
| Details | Modified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"Q9CQX2","evidenceCode":"ECO:0000250"}]} |
