P56630 · CYB_ASPFM
- ProteinCytochrome b
- Genecob
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids145 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex) that is part of the mitochondrial respiratory chain. The b-c1 complex mediates electron transfer from ubiquinol to cytochrome c. Contributes to the generation of a proton gradient across the mitochondrial membrane that is then used for ATP synthesis.
Miscellaneous
Heme 1 (or BL or b562) is low-potential and absorbs at about 562 nm, and heme 2 (or BH or b566) is high-potential and absorbs at about 566 nm.
Cofactor
Note: Binds 2 heme b groups non-covalently.
Features
Showing features for binding site.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | mitochondrial respiratory chain complex III | |
Molecular Function | metal ion binding | |
Molecular Function | ubiquinol-cytochrome-c reductase activity | |
Biological Process | mitochondrial electron transport, ubiquinol to cytochrome c |
Keywords
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameCytochrome b
- Alternative names
Gene names
Encoded on
- Mitochondrion
Organism names
- Strains
- Taxonomic lineageEukaryota > Fungi > Dikarya > Ascomycota > Pezizomycotina > Eurotiomycetes > Eurotiomycetidae > Eurotiales > Aspergillaceae > Aspergillus > Aspergillus subgen. Fumigati
Accessions
- Primary accessionP56630
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 38-58 | Helical | ||||
Sequence: FFALHFLLPFVLAALVIMHLI | ||||||
Transmembrane | 85-105 | Helical | ||||
Sequence: FVFKDLVTVFIFFIVLSVFVF |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000061736 | 1-145 | Cytochrome b | |||
Sequence: WGATVITNLMSAIPWIGQDIVEFIWGGFSVNNATLNRFFALHFLLPFVLAALVIMHLIAMHDTVGSGNPLGISGNYDRLPFAPYFVFKDLVTVFIFFIVLSVFVFFMPNALGDSENYVMANPMQTPPAIVPEWYLLPFYAILRSI |
Interaction
Subunit
Fungal cytochrome b-c1 complex contains 10 subunits; 3 respiratory subunits, 2 core proteins and 5 low-molecular weight proteins. Cytochrome b-c1 complex is a homodimer.
Structure
Sequence
- Sequence statusFragment
- Length145
- Mass (Da)16,295
- Last updated1998-12-15 v1
- Checksum376A89A0C8F6FA7D
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Non-terminal residue | 1 | |||||
Sequence: W | ||||||
Non-terminal residue | 145 | |||||
Sequence: I |
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
AB000566 EMBL· GenBank· DDBJ | BAA34133.2 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000567 EMBL· GenBank· DDBJ | BAA34134.2 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000586 EMBL· GenBank· DDBJ | BAA34151.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000587 EMBL· GenBank· DDBJ | BAA34152.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000588 EMBL· GenBank· DDBJ | BAA34153.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000589 EMBL· GenBank· DDBJ | BAA34154.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000590 EMBL· GenBank· DDBJ | BAA34155.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000591 EMBL· GenBank· DDBJ | BAA34156.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000592 EMBL· GenBank· DDBJ | BAA34157.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AB000593 EMBL· GenBank· DDBJ | BAA34158.1 EMBL· GenBank· DDBJ | Genomic DNA |