F8T3Z3 · F8T3Z3_GLOSP
- ProteinCytochrome c oxidase subunit 1
- GeneCOI
- StatusUniProtKB unreviewed (TrEMBL)
- Amino acids226 (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)
4 RHEA-COMP:10350 + CHEBI:15379 + 8 H+ (in)CHEBI:15378= 4 RHEA-COMP:14399 + 2 CHEBI:15377 + 4 H+ (out)CHEBI:15378
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
- 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 > Sar > Stramenopiles > Oomycota > Pythiales > Pythiaceae > Globisporangium
Accessions
- Primary accessionF8T3Z3
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Transmembrane | 7-29 | Helical | |||
Transmembrane | 49-75 | Helical | |||
Transmembrane | 96-118 | Helical | |||
Transmembrane | 138-163 | Helical | |||
Transmembrane | 175-202 | Helical | |||
Keywords
- Cellular component
Structure
Sequence
- Sequence statusFragment
- Length226
- Mass (Da)24,492
- Last updated2011-09-21 v1
- Checksum851D48A8605E8D42
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Non-terminal residue | 1 | ||||
Non-terminal residue | 226 | ||||
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
HQ708836 EMBL· GenBank· DDBJ | ADW25184.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
HQ708837 EMBL· GenBank· DDBJ | ADW25185.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
HQ708838 EMBL· GenBank· DDBJ | ADW25186.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273526 EMBL· GenBank· DDBJ | BAY00659.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273527 EMBL· GenBank· DDBJ | BAY00660.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273528 EMBL· GenBank· DDBJ | BAY00661.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273529 EMBL· GenBank· DDBJ | BAY00662.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273530 EMBL· GenBank· DDBJ | BAY00663.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273531 EMBL· GenBank· DDBJ | BAY00664.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273532 EMBL· GenBank· DDBJ | BAY00665.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273533 EMBL· GenBank· DDBJ | BAY00666.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273534 EMBL· GenBank· DDBJ | BAY00667.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273535 EMBL· GenBank· DDBJ | BAY00668.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273536 EMBL· GenBank· DDBJ | BAY00669.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273539 EMBL· GenBank· DDBJ | BAY00672.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273540 EMBL· GenBank· DDBJ | BAY00673.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273541 EMBL· GenBank· DDBJ | BAY00674.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273542 EMBL· GenBank· DDBJ | BAY00675.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273543 EMBL· GenBank· DDBJ | BAY00676.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
LC273545 EMBL· GenBank· DDBJ | BAY00678.1 EMBL· GenBank· DDBJ | Genomic DNA |