D2KWE6 · D2KWE6_THEEQ

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

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
      cox1

Encoded on

  • Mitochondrion

Organism names

Accessions

  • Primary accession
    D2KWE6

Organism-specific databases

Subcellular Location

Membrane
; Multi-pass membrane protein
Mitochondrion inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane21-42Helical
Transmembrane62-86Helical
Transmembrane107-128Helical
Transmembrane148-171Helical
Transmembrane192-216Helical
Transmembrane249-267Helical
Transmembrane279-298Helical
Transmembrane310-330Helical
Transmembrane342-363Helical
Transmembrane383-403Helical
Transmembrane415-436Helical
Transmembrane456-478Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-480Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    480
  • Mass (Da)
    53,427
  • Last updated
    2010-03-02 v1
  • Checksum
    C2FCBEE7D8732576
MNYFESFFSSDSLSCNHKIIGLGYIIVSYLFGLVGFYMSVVIRTELSMSGLKVVSGDTLEIYNVLFTLHGIIMVFFNVMTGLLGGIGNYLYPIFLGASDVVFPRSNLYSLLMQPISYFFVLSSIYLEIGSGTGWTLYPPLSTSLSQMGIDMIILGLILSGISSILGSINFITTFFSLKSVGSKIELQLPVSWSILLTSILLLLSLPFVTTALIMVYTDRHHNTMFFDQMNSGDPVLYQHLFWLFGHPEVYVMILPAFGIISIIMSVFAKKEVFGNQTMILAMLSIGILGSLVWGHHMYTSGMEIDSRSYFTTLTILISLPTGNKIFNWVCTSKSFNSIRNSGVLLLTTSFILMFVVGGTTGVVLGNSGIDISLHDTMYVVGHFHFVLSIGAIIGLLSFLTFSQRLFVKNILSNKLIIFIIPIFLCSVLLTFAPMHFVGFSPLPRRIPDYPDEMWGWNLLCTLGSTMMLIFKLLLIIILSF

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AB499091
EMBL· GenBank· DDBJ
BAI66181.1
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.
FeedbackHelp