A0A0B5EAX1 · A0A0B5EAX1_TERCA
- ProteinCytochrome b
- Genecytb
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids361 (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 | 70 | Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 84 | Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 169 | Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 183 | Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue | |||
Binding site | 188 | 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 > Chordata > Craniata > Vertebrata > Euteleostomi > Archelosauria > Testudinata > Testudines > Cryptodira > Durocryptodira > Testudinoidea > Emydidae > Terrapene
Accessions
- Primary accessionA0A0B5EAX1
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 20-40 | Helical | |||
Transmembrane | 76-96 | Helical | |||
Transmembrane | 102-120 | Helical | |||
Transmembrane | 132-153 | Helical | |||
Transmembrane | 165-187 | Helical | |||
Transmembrane | 216-237 | Helical | |||
Transmembrane | 275-294 | Helical | |||
Transmembrane | 306-327 | Helical | |||
Transmembrane | 333-353 | Helical | |||
Keywords
- Cellular component
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Domain | 1-196 | Cytochrome b/b6 N-terminal region profile | |||
Domain | 197-361 | Cytochrome b/b6 C-terminal region profile | |||
Sequence similarities
Belongs to the cytochrome b family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusFragment
- Length361
- Mass (Da)40,618
- Last updated2015-04-01 v1
- MD5 ChecksumA970534BAF3C0618569B1B6CCE9B0AEF
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Non-terminal residue | 1 | ||||
Non-terminal residue | 361 | ||||
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
KF059102 EMBL· GenBank· DDBJ | AJE60688.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF059103 EMBL· GenBank· DDBJ | AJE60689.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF059105 EMBL· GenBank· DDBJ | AJE60691.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF059107 EMBL· GenBank· DDBJ | AJE60693.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF059108 EMBL· GenBank· DDBJ | AJE60694.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF059109 EMBL· GenBank· DDBJ | AJE60695.1 EMBL· GenBank· DDBJ | Genomic DNA |