A4KWX7 · A4KWX7_9HYME

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

Cofactor

heme (UniProtKB | Rhea| CHEBI:30413 )

Pathway

Energy metabolism; oxidative phosphorylation.

GO annotations

AspectTerm
Cellular Componentmitochondrial inner membrane
Molecular Functioncytochrome-c oxidase activity
Molecular Functionheme binding
Molecular Functionmetal ion binding
Biological Processelectron transport coupled proton transport
Biological Processmitochondrial electron transport, cytochrome c to oxygen

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome c oxidase subunit 1
  • EC number

Gene names

    • Name
      COI

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Strains
    • BR1_L24
    • BR1_L31
    • BR1_L32
    • BR1_L36
    • BR1_L37
  • Taxonomic lineage
    Eukaryota > Metazoa > Ecdysozoa > Arthropoda > Hexapoda > Insecta > Pterygota > Neoptera > Endopterygota > Hymenoptera > Apocrita > Proctotrupomorpha > Chalcidoidea > Pteromalidae > Sycoryctinae > Philotrypesini > Philotrypesis

Accessions

  • Primary accession
    A4KWX7

Subcellular Location

Mitochondrion inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane35-56Helical
Transmembrane77-101Helical
Transmembrane121-142Helical
Transmembrane154-182Helical

Keywords

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).

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-190Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    190
  • Mass (Da)
    20,776
  • Last updated
    2007-05-01 v1
  • Checksum
    DF379FC6932F6334
IMGLSMSMIIRLELSSPGSLIGNDQIYNSIVTTHAFTMIFFFVMPVMMGGFGNYLIPIMLGAPDMAFPRMNNMSFWLLPPSIMLLISSMFVGTGTGTGWTVYPPLSSNLGHNGPSVDLSIFSLHIAGLSSIMGSINFISTMMNMKVYKIENLPLFAWAMMLTAILLLLSLPVLAGAITMLLFDRNLNTSF

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue190

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
EF126760
EMBL· GenBank· DDBJ
ABO48459.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126761
EMBL· GenBank· DDBJ
ABO48460.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126762
EMBL· GenBank· DDBJ
ABO48461.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126763
EMBL· GenBank· DDBJ
ABO48462.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126764
EMBL· GenBank· DDBJ
ABO48463.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126765
EMBL· GenBank· DDBJ
ABO48464.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126766
EMBL· GenBank· DDBJ
ABO48465.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126767
EMBL· GenBank· DDBJ
ABO48466.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126768
EMBL· GenBank· DDBJ
ABO48467.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126770
EMBL· GenBank· DDBJ
ABO48469.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126771
EMBL· GenBank· DDBJ
ABO48470.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126772
EMBL· GenBank· DDBJ
ABO48471.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126773
EMBL· GenBank· DDBJ
ABO48472.1
EMBL· GenBank· DDBJ
Genomic DNA
EF126774
EMBL· GenBank· DDBJ
ABO48473.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.
Help