I6TJD3 · I6TJD3_9NEOP

  • Protein
    Cytochrome c oxidase subunit 1
  • Gene
    COX1
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    3/5

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

Cofactor

heme (UniProtKB | Rhea| CHEBI:30413 )

Pathway

Energy metabolism; oxidative phosphorylation.

GO annotations

AspectTerm
Cellular Componentmitochondrial inner membrane
Cellular Componentrespiratory chain complex IV
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
      COX1
    • Synonyms
      cox1

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Organism
  • Strains
    • ISO205
    • ISO209
    • ISO210
    • ISO752
    • ISO753
  • Taxonomic lineage
    Eukaryota > Metazoa > Ecdysozoa > Arthropoda > Hexapoda > Insecta > Pterygota > Neoptera > Polyneoptera > Dictyoptera > Blattodea > Blattoidea > Termitoidae > Rhinotermitidae > Coptotermes

Accessions

  • Primary accession
    I6TJD3

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane16-36Helical
Transmembrane56-82Helical
Transmembrane103-125Helical
Transmembrane145-170Helical
Transmembrane182-209Helical
Transmembrane242-258Helical
Transmembrane270-290Helical
Transmembrane302-324Helical
Transmembrane336-358Helical
Transmembrane378-399Helical
Transmembrane411-429Helical
Transmembrane449-472Helical

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
Domain1-511Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    515
  • Mass (Da)
    56,834
  • Last updated
    2012-10-03 v1
  • Checksum
    70FD73E900B53072
MFNRWFFSTNHKDIGTLYFVFGAWSGMVGTSLSMLIRTELGQPGSLIGDDQIYNVIVTAHAFVMIFFMVMPILIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSLTLLLASSAVESGAGTGWTVYPPLASGIAHAGASVDLAIFSLHLAGVSSILGAVNFISTTINMKPKNMKPERIPLFVWSVAITALLLLLSLPVLAGAITMLLTDRNLNTSFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGMISHIICHESGKKEAFGNLGMIFAMLAIGLLGFVVWAHHMFTVGMDVDTRAYFTSATMIIAVPTGIKIFSWLATMYGSQLTYSATCLWALGFVFLFTMGGLTGVVLANSSIDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIQWFPLFTGLTMNPKWLKAQFAVMFTGVNMTFFPQHFLGLAGMPRRYSDYPDAYTTWNIISSMGSTISFVSVMMFLFIIWESISSNRQILFPTQTSNSIEWLQNFPPAEHSYSELPTISLTNN

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
JX144934
EMBL· GenBank· DDBJ
AFM92449.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ918257
EMBL· GenBank· DDBJ
AIT58364.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ918258
EMBL· GenBank· DDBJ
AIT58366.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ918259
EMBL· GenBank· DDBJ
AIT58368.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ918293
EMBL· GenBank· DDBJ
AIT58436.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ918294
EMBL· GenBank· DDBJ
AIT58438.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ918299
EMBL· GenBank· DDBJ
AIT58448.1
EMBL· GenBank· DDBJ
Genomic DNA
KU925211
EMBL· GenBank· DDBJ
AMX22732.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

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