A0A1B0TCJ0 · A0A1B0TCJ0_9TELE
- ProteinCytochrome c oxidase subunit 1
- GeneCO1
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids192 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Component of the cytochrome c oxidase, the last enzyme in the mitochondrial electron transport chain which drives oxidative phosphorylation. The respiratory chain contains 3 multisubunit complexes succinate dehydrogenase (complex II, CII), ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII) and cytochrome c oxidase (complex IV, CIV), that cooperate to transfer electrons derived from NADH and succinate to molecular oxygen, creating an electrochemical gradient over the inner membrane that drives transmembrane transport and the ATP synthase. Cytochrome c oxidase is the component of the respiratory chain that catalyzes the reduction of oxygen to water. Electrons originating from reduced cytochrome c in the intermembrane space (IMS) are transferred via the dinuclear copper A center (CU(A)) of subunit 2 and heme A of subunit 1 to the active site in subunit 1, a binuclear center (BNC) formed by heme A3 and copper B (CU(B)). The BNC reduces molecular oxygen to 2 water molecules using 4 electrons from cytochrome c in the IMS and 4 protons from the mitochondrial matrix.
Catalytic activity
- 4 Fe(II)-[cytochrome c] + O2 + 8 H+(in) = 4 Fe(III)-[cytochrome c] + 2 H2O + 4 H+(out)This reaction proceeds in the forward direction.
4 RHEA-COMP:10350 + CHEBI:15379 + 8 H+ (in)CHEBI:15378= 4 RHEA-COMP:14399 + 2 CHEBI:15377 + 4 H+ (out)CHEBI:15378
Cofactor
Protein has several cofactor binding sites:
Pathway
Energy metabolism; oxidative phosphorylation.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | mitochondrial inner membrane | |
Molecular Function | cytochrome-c oxidase activity | |
Molecular Function | heme binding | |
Molecular Function | metal ion binding | |
Biological Process | electron transport coupled proton transport | |
Biological Process | mitochondrial electron transport, cytochrome c to oxygen |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameCytochrome c oxidase subunit 1
- EC number
Gene names
Encoded on
- Mitochondrion
Organism names
- Strains
- Taxonomic lineageEukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Teleostei > Clupei > Clupeiformes > Clupeoidei > Clupeidae > Sardinella
Accessions
- Primary accessionA0A1B0TCJ0
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 22-52 | Helical | |||
Transmembrane | 73-97 | Helical | |||
Transmembrane | 117-140 | Helical | |||
Transmembrane | 152-179 | Helical | |||
Keywords
- Cellular component
Structure
Sequence
- Sequence statusFragment
- Length192
- Mass (Da)20,453
- Last updated2016-11-02 v1
- MD5 Checksum6854986AA91A73ACF6CD7450604A479A
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Non-terminal residue | 1 | ||||
Non-terminal residue | 192 | ||||
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
KT461702 EMBL· GenBank· DDBJ | ALI97309.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461703 EMBL· GenBank· DDBJ | ALI97310.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461704 EMBL· GenBank· DDBJ | ALI97311.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461705 EMBL· GenBank· DDBJ | ALI97312.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461706 EMBL· GenBank· DDBJ | ALI97313.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461707 EMBL· GenBank· DDBJ | ALI97314.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461708 EMBL· GenBank· DDBJ | ALI97315.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461709 EMBL· GenBank· DDBJ | ALI97316.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461710 EMBL· GenBank· DDBJ | ALI97317.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461711 EMBL· GenBank· DDBJ | ALI97318.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461712 EMBL· GenBank· DDBJ | ALI97319.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461713 EMBL· GenBank· DDBJ | ALI97320.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461714 EMBL· GenBank· DDBJ | ALI97321.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461715 EMBL· GenBank· DDBJ | ALI97322.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461716 EMBL· GenBank· DDBJ | ALI97323.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461717 EMBL· GenBank· DDBJ | ALI97324.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461718 EMBL· GenBank· DDBJ | ALI97325.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461719 EMBL· GenBank· DDBJ | ALI97326.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461721 EMBL· GenBank· DDBJ | ALI97328.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461722 EMBL· GenBank· DDBJ | ALI97329.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461723 EMBL· GenBank· DDBJ | ALI97330.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461724 EMBL· GenBank· DDBJ | ALI97331.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461725 EMBL· GenBank· DDBJ | ALI97332.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KT461726 EMBL· GenBank· DDBJ | ALI97333.1 EMBL· GenBank· DDBJ | Genomic DNA |