A0A0S3J5R2 · A0A0S3J5R2_9PLEU

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

Protein has several cofactor binding sites:
Cu cation (UniProtKB | Rhea| CHEBI:23378 )

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
      COI

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Strain
    • PKU_916
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Teleostei > Neoteleostei > Acanthomorphata > Carangaria > Pleuronectiformes > Pleuronectoidei > Cynoglossidae > Symphurinae > Symphurus

Accessions

  • Primary accession
    A0A0S3J5R2

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane20-50Helical
Transmembrane113-138Helical
Transmembrane150-177Helical
Transmembrane210-230Helical
Transmembrane237-258Helical
Transmembrane270-293Helical
Transmembrane305-326Helical
Transmembrane346-367Helical
Transmembrane379-403Helical
Transmembrane423-445Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-467Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    467
  • Mass (Da)
    51,476
  • Last updated
    2016-02-17 v1
  • MD5 Checksum
    3D1B4B9E6DFB8D60DE393E899DAD38ED
SVIIRIELSQPGPMMGDDQIYNVVVTAHAFVMIFFMVMPVLIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSLLLLLTSSAAEAGAGTGWTVYPPLSGNMAHAGPSVDMAIFSLHLAGISSILGAINFITTIFNMKPAAMTVYQMPLFIWSVLITAVLLLLSLPVLAAGITMLLTDRNLNTAFFDPAGGGDPILYQHLFWFFGHPEVYILILPGFGIISHVIAYYAGKKSTFGYMGMVWAMMAIGLLGFIVWAHHMFTVGMDVDTRAYFTSATMVIAIPTGVKVFSWLATLHGNKIQWEAPLLWALGFLFLFTVGGLTGIILSNSSLDIILHDTYYVVAHFHYVLSMGAVFAIMAGFIHWFPLFTGFTVHPKLAKAHFVVMFTGVNLTFFPQHFLGLAGMPRRYSDYPDAYAVWNAVSSFGSLLSVVGVAMFMHLLWHAFVYKQKVIMGEFMKSNVEWMNGCPP

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue467

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KU234518
EMBL· GenBank· DDBJ
ALR73594.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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