Essential maintenance is planned to begin on Fri Jan 24 2025. The website may be temporarily unavailable. Please use our fallback: https://wwwdev.ebi.ac.uk/uniprot/front-end/fallback/ in case of any outage.

A0A0A0QY78 · A0A0A0QY78_9TELE

  • Protein
    Cytochrome c oxidase subunit 1
  • Gene
    COI
  • 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

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
  • Organism
  • Strains
    • PKU_2467
    • PKUI_190
    • PKUI_191
    • PKUI_192
    • PKUI_193
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Teleostei > Neoteleostei > Acanthomorphata > Eupercaria > Perciformes > Scorpaenoidei > Sebastidae > Sebastinae > Sebastes

Accessions

  • Primary accession
    A0A0A0QY78

Subcellular Location

Mitochondrion inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane12-39Helical
Transmembrane60-84Helical
Transmembrane104-127Helical
Transmembrane139-166Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-191Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    191
  • Mass (Da)
    20,405
  • Last updated
    2015-02-04 v1
  • MD5 Checksum
    D8B53ADCE364EE24C308A3555853A172
GALLGDDQIYNVIVTAHAFVMIFFMVMPIMIGGFGNWLIPLMIGAPDMAFPRMNNMSFWLLPPSFLLLLASSGVEAGAGTGWTVYPPLAGNLAHAGASVDLTIFSLHLAGISSILGAINFITTIINMKPPAISQYQTPLFVWAVLITAVLLLLSLPVLAAGITMLLTDRNLNTTFFDPAGGGDPILYQHLF

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue191

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KM366115
EMBL· GenBank· DDBJ
AIU95519.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366122
EMBL· GenBank· DDBJ
AIU95526.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366125
EMBL· GenBank· DDBJ
AIU95529.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366126
EMBL· GenBank· DDBJ
AIU95530.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366127
EMBL· GenBank· DDBJ
AIU95531.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366128
EMBL· GenBank· DDBJ
AIU95532.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366129
EMBL· GenBank· DDBJ
AIU95533.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366130
EMBL· GenBank· DDBJ
AIU95534.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366131
EMBL· GenBank· DDBJ
AIU95535.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366132
EMBL· GenBank· DDBJ
AIU95536.1
EMBL· GenBank· DDBJ
Genomic DNA
KM366133
EMBL· GenBank· DDBJ
AIU95537.1
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