A0A0D3S148 · A0A0D3S148_9HYME
- ProteinCytochrome c oxidase subunit 1
- GeneCOI
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids157 (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] + 8 H+(in) + O2 = 4 Fe(III)-[cytochrome c] + 4 H+(out) + 2 H2OThis reaction proceeds in the forward direction.
4 RHEA-COMP:10350 + 8 H+ (in)CHEBI:15378+ CHEBI:15379 = 4 RHEA-COMP:14399 + 4 H+ (out)CHEBI:15378+ 2 CHEBI:15377
Cofactor
Pathway
Energy metabolism; oxidative phosphorylation.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | mitochondrial inner membrane | |
Cellular Component | respirasome | |
Molecular Function | cytochrome-c oxidase activity | |
Molecular Function | heme binding | |
Molecular Function | metal ion binding | |
Biological Process | oxidative phosphorylation |
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
- Organism
- Strains
- Taxonomic lineageEukaryota > Metazoa > Ecdysozoa > Arthropoda > Hexapoda > Insecta > Pterygota > Neoptera > Endopterygota > Hymenoptera > Apocrita > Aculeata > Vespoidea > Vespidae > Polistinae > Epiponini > Synoeca
Accessions
- Primary accessionA0A0D3S148
Subcellular Location
UniProt Annotation
GO Annotation
Mitochondrion inner membrane ; Multi-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 63-87 | Helical | ||||
Sequence: IFSLHIAGISSIMGAINFIVTIINM | ||||||
Transmembrane | 99-126 | Helical | ||||
Sequence: LFSWSVMITAILLLLSLPVLAGAITMLL |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for signal, chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Signal | 1-31 | |||||
Sequence: LMLGAPDMAFPRMNNMSFWLLPPSLLMLLTS | ||||||
Chain | PRO_5011031433 | 32-157 | Cytochrome c oxidase subunit 1 | |||
Sequence: NMINPGVGTGWTLYPPLSSLMGHNSPSVDLSIFSLHIAGISSIMGAINFIVTIINMKIKMNSMNFLPLFSWSVMITAILLLLSLPVLAGAITMLLTDRNLNTTFFDPMGGGDPILFQHLFWFFGHP |
Interaction
Subunit
Component of the cytochrome c oxidase (complex IV, CIV), a multisubunit enzyme composed of a catalytic core of 3 subunits and several supernumerary subunits. The complex exists as a monomer or a dimer and forms supercomplexes (SCs) in the inner mitochondrial membrane with ubiquinol-cytochrome c oxidoreductase (cytochrome b-c1 complex, complex III, CIII).
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 1-157 | Cytochrome oxidase subunit I profile | ||||
Sequence: LMLGAPDMAFPRMNNMSFWLLPPSLLMLLTSNMINPGVGTGWTLYPPLSSLMGHNSPSVDLSIFSLHIAGISSIMGAINFIVTIINMKIKMNSMNFLPLFSWSVMITAILLLLSLPVLAGAITMLLTDRNLNTTFFDPMGGGDPILFQHLFWFFGHP |
Sequence similarities
Belongs to the heme-copper respiratory oxidase family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusFragment
- Length157
- Mass (Da)17,288
- Last updated2015-05-27 v1
- ChecksumDE8DB05EA75A77F2
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Non-terminal residue | 1 | |||||
Sequence: L | ||||||
Non-terminal residue | 157 | |||||
Sequence: P |
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
KJ829552 EMBL· GenBank· DDBJ | AJS18605.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KJ829553 EMBL· GenBank· DDBJ | AJS18606.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KJ829556 EMBL· GenBank· DDBJ | AJS18609.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941557 EMBL· GenBank· DDBJ | ASU10587.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941558 EMBL· GenBank· DDBJ | ASU10588.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941559 EMBL· GenBank· DDBJ | ASU10589.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941561 EMBL· GenBank· DDBJ | ASU10591.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941564 EMBL· GenBank· DDBJ | ASU10594.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941566 EMBL· GenBank· DDBJ | ASU10596.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941567 EMBL· GenBank· DDBJ | ASU10597.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941568 EMBL· GenBank· DDBJ | ASU10598.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941569 EMBL· GenBank· DDBJ | ASU10599.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941570 EMBL· GenBank· DDBJ | ASU10600.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941571 EMBL· GenBank· DDBJ | ASU10601.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941573 EMBL· GenBank· DDBJ | ASU10603.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KX941581 EMBL· GenBank· DDBJ | ASU10611.1 EMBL· GenBank· DDBJ | Genomic DNA |