A0A0A0QKX2 · A0A0A0QKX2_AEGDI

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 respiratory 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
  • Strains
    • S16-1
    • S16-2
    • S16-3
    • S16-4
    • S17
    • S27-1
  • Taxonomic lineage
    Eukaryota > Metazoa > Spiralia > Lophotrochozoa > Mollusca > Gastropoda > Heterobranchia > Euthyneura > Panpulmonata > Eupulmonata > Stylommatophora > Helicina > Camaenoidea > Camaenidae > Bradybaeninae > Aegista

Accessions

  • Primary accession
    A0A0A0QKX2

Subcellular Location

Mitochondrion inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane6-25Helical
Transmembrane37-66Helical
Transmembrane86-112Helical
Transmembrane124-148Helical
Transmembrane168-193Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-218Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    218
  • Mass (Da)
    23,601
  • Last updated
    2015-02-04 v1
  • Checksum
    820A8E00CA3D7E08
TLYMMFGVWCGMVGSGLSLLIRMELGTSGVLSDDHFFNVIVTAHAFVMIFFMVMPIMIGGFGNWMVPLLIGAPDMSFPRMNNMSFWLLPPSFVLLISSSLVEGGAGTGWTVYPPLSSLTGHSGASVDLAIFSLHLAGMSSILGAINFITTIFNMRGPGVTMERVSLFVWSILITVFLLLLSLPVLAGAITMLLTDRNFNTSFFDPAGGGDPILYQHLF

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue218

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KJ574339
EMBL· GenBank· DDBJ
AIO05958.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ574340
EMBL· GenBank· DDBJ
AIO05959.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ574341
EMBL· GenBank· DDBJ
AIO05960.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ574342
EMBL· GenBank· DDBJ
AIO05961.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ574343
EMBL· GenBank· DDBJ
AIO05962.1
EMBL· GenBank· DDBJ
Genomic DNA
KJ574353
EMBL· GenBank· DDBJ
AIO05972.1
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