S5TFT3 · S5TFT3_9ASCO

  • Protein
    Cytochrome c oxidase subunit 1
  • Gene
    cox1
  • 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

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 Processoxidative phosphorylation

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

  • Taxonomic identifier
  • Organism
  • Strain
    • AS2.3656
  • Taxonomic lineage
    Eukaryota > Fungi > Dikarya > Ascomycota > Saccharomycotina > Saccharomycetes > Saccharomycetales > Debaryomycetaceae > Candida/Lodderomyces clade > Candida

Accessions

  • Primary accession
    S5TFT3

Subcellular Location

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

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane20-40Helical
Transmembrane60-91Helical
Transmembrane103-121Helical
Transmembrane148-174Helical
Transmembrane186-214Helical
Transmembrane246-264Helical
Transmembrane276-293Helical
Transmembrane305-324Helical
Transmembrane336-359Helical
Transmembrane379-398Helical
Transmembrane410-432Helical
Transmembrane452-476Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain7-528Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    530
  • Mass (Da)
    58,794
  • Last updated
    2013-10-16 v1
  • Checksum
    931CBABD36336D77
MSYITRWLFSTSHKDIAILYLIYGMISAMVGTGMSVIIRLELSGSGPLYLNSDNQVYNVLISGHALAMIFLFVMPVIIGAFGNFFLPIMLGAVDMAFARLNNISFWCLPPALVCIIGSLLIENGPGVGWTVYPPLSSISAHSGPSVDLAIFAIHLTSISSLLGAINFIVTTLNMRSIGIHMIDMPLYAWSIFFTAWLLLLSLPVLTAGVTLLLMDRNFNTGFYDVAAGGDPILYEHLFWFFGHPEVYILIIPGFGIISHVIATYSKKEIFGRMGMVYAIASIGLLGFLVWSHHMYIVGLDIDSRAYFTSATMVIAVPTGIKIFSWLATLYGGEIRIAVPMLFALGFLFLFTVGGCTGIMLSNASIDIAFHDTYYTVGHFHYVLSMGAVFSLIAGYYLWSYPMFGLNYNKVIGEAHFWTLFISVNLIFLPMHFLGLNGMPRRIPQYPDAFLGWNIISSWGSIMSIISVLIGLYGILIQLTNGENIEREEPVTPDFLESNTTRETRDSDLEMILNKPAYYHTFSELPILITA

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KC993187
EMBL· GenBank· DDBJ
AGS44307.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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