L0ET20 · L0ET20_ATRPE
- ProteinCytochrome b
- GeneCYTB
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids381 (go to sequence)
- Protein existenceInferred from homology
- Annotation score2/5
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.
Cofactor
Protein has several cofactor binding sites:
Note: Binds 2 heme groups non-covalently.
Note: Binds 2 heme groups non-covalently.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Binding site | 82 | Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 96 | Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 182 | Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 196 | Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 201 | a ubiquinone (UniProtKB | ChEBI) | |||
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | mitochondrial inner membrane | |
Cellular Component | 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
Gene names
Encoded on
- Mitochondrion
Organism names
- Taxonomic lineageEukaryota > Metazoa > Spiralia > Lophotrochozoa > Mollusca > Bivalvia > Autobranchia > Pteriomorphia > Pterioida > Pinnoidea > Pinnidae > Atrina
Accessions
- Primary accessionL0ET20
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 28-55 | Helical | |||
Transmembrane | 76-97 | Helical | |||
Transmembrane | 109-133 | Helical | |||
Transmembrane | 140-165 | Helical | |||
Transmembrane | 177-200 | Helical | |||
Transmembrane | 229-246 | Helical | |||
Transmembrane | 288-307 | Helical | |||
Transmembrane | 319-338 | Helical | |||
Transmembrane | 350-372 | Helical | |||
Keywords
- Cellular component
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Domain | 1-209 | Cytochrome b/b6 N-terminal region profile | |||
Domain | 210-380 | Cytochrome b/b6 C-terminal region profile | |||
Sequence similarities
Belongs to the cytochrome b family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length381
- Mass (Da)43,312
- Last updated2013-03-06 v1
- Checksum0FF6659141834DFE
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
KC153059 EMBL· GenBank· DDBJ | AGA63944.1 EMBL· GenBank· DDBJ | Genomic DNA |