A0A5Q3A3F5 · A0A5Q3A3F5_9ROSA
- ProteinCytochrome b
- Genecob
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids393 (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 | 88 | Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 102 | Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 189 | Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 203 | Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 208 | 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
- Organism
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Rosales > Rosaceae > Amygdaloideae > Maleae > Eriobotrya
Accessions
- Primary accessionA0A5Q3A3F5
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 34-58 | Helical | |||
Transmembrane | 83-105 | Helical | |||
Transmembrane | 117-140 | Helical | |||
Transmembrane | 147-171 | Helical | |||
Transmembrane | 191-210 | Helical | |||
Transmembrane | 231-252 | Helical | |||
Transmembrane | 296-314 | Helical | |||
Transmembrane | 326-346 | Helical | |||
Transmembrane | 352-371 | Helical | |||
Keywords
- Cellular component
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Domain | 1-216 | Cytochrome b/b6 N-terminal region profile | |||
Domain | 217-387 | Cytochrome b/b6 C-terminal region profile | |||
Sequence similarities
Belongs to the cytochrome b family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length393
- Mass (Da)44,075
- Last updated2020-02-26 v1
- Checksum58A0F8A071879BCE
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
MN481990 EMBL· GenBank· DDBJ | QGI24956.1 EMBL· GenBank· DDBJ | Genomic DNA |