F6JX73 · F6JX73_9SCOM

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
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
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Teleostei > Neoteleostei > Acanthomorphata > Pelagiaria > Scombriformes > Centrolophidae > Centrolophus

Accessions

  • Primary accession
    F6JX73

Subcellular Location

Mitochondrion inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane6-28Helical
Transmembrane40-62Helical
Transmembrane96-116Helical
Transmembrane136-158Helical
Transmembrane170-197Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-231Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    231
  • Mass (Da)
    24,788
  • Last updated
    2011-07-27 v1
  • MD5 Checksum
    B07CFE0A0073C0A918371F8376E3373A
DIGTLYLVFGAWAGMVGTALSLLIRAELSQPGALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTIINMKPAAISQYQTPLFVWAVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLFWFFGHPEVY

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue231

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
HM007793
EMBL· GenBank· DDBJ
ADQ00596.1
EMBL· GenBank· DDBJ
Genomic DNA
HM007794
EMBL· GenBank· DDBJ
ADQ00597.1
EMBL· GenBank· DDBJ
Genomic DNA
HM007795
EMBL· GenBank· DDBJ
ADQ00598.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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