A0A1L1YNX0 · A0A1L1YNX0_9FLOR

  • 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 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
      cox1

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Organism
  • Strains
    • 103P
    • 104P
    • 105P
    • 106P
    • 116P
  • Taxonomic lineage
    Eukaryota > Rhodophyta > Florideophyceae > Rhodymeniophycidae > Gracilariales > Gracilariaceae > Gracilaria

Accessions

  • Primary accession
    A0A1L1YNX0

Subcellular Location

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

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane20-49Helical
Transmembrane70-92Helical
Transmembrane112-137Helical
Transmembrane149-176Helical
Transmembrane196-220Helical
Transmembrane232-256Helical
Transmembrane268-291Helical
Transmembrane303-324Helical
Transmembrane344-362Helical
Transmembrane383-401Helical
Transmembrane421-441Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-460Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    460
  • Mass (Da)
    50,969
  • Last updated
    2017-03-15 v1
  • MD5 Checksum
    8B8675EA770C96B43210E1C1A1E6C6C1
IRMELAQPGNQLLLGNHQIYNVLITAHAFLMIFFMVMPVMIGGFGNWLVPIMIGSPDMAFPRLNNISFWLLPPSLCLLLASAVVEVGVGTGWTVYPPLSSIQSHSGGAVDLAIFSLHISGASSILGAINFISTILNMRNPGQSLYRMPLFVWSIFITAFLLLLAVPVLAGAITMLLTDRNFNTAFFDPAGGGDPVLYQHLFWFFGHPEVYILILPGFGMISHIVATFSRKPVFGYIGMVYAMVSIGVLGFIVWAHHMYTVGLDVDTRAYFTAATMIIAVPTGIKIFSWVATMWEGSLYFKTPMLFATGFIFLFTIGGLTGIVLANSGLDISLHDTYYVVAHFHYVLSMGAVFAIFAGFYYWFGKITGVQYPEVLGKIHFWSTFIGVNLTFMPMHFLGLAGMPRRIPDYPDAYAGWNLIASYGSYVALFSTLFFFYLVFVSLTSKNPCINAPWNFELSENK

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue460

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KP010044
EMBL· GenBank· DDBJ
AKN80290.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010045
EMBL· GenBank· DDBJ
AKN80291.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010046
EMBL· GenBank· DDBJ
AKN80292.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010047
EMBL· GenBank· DDBJ
AKN80293.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010048
EMBL· GenBank· DDBJ
AKN80294.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010049
EMBL· GenBank· DDBJ
AKN80295.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010050
EMBL· GenBank· DDBJ
AKN80296.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010051
EMBL· GenBank· DDBJ
AKN80297.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010052
EMBL· GenBank· DDBJ
AKN80298.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010053
EMBL· GenBank· DDBJ
AKN80299.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010054
EMBL· GenBank· DDBJ
AKN80300.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010055
EMBL· GenBank· DDBJ
AKN80301.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010056
EMBL· GenBank· DDBJ
AKN80302.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010057
EMBL· GenBank· DDBJ
AKN80303.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010058
EMBL· GenBank· DDBJ
AKN80304.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010059
EMBL· GenBank· DDBJ
AKN80305.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010061
EMBL· GenBank· DDBJ
AKN80307.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010062
EMBL· GenBank· DDBJ
AKN80308.1
EMBL· GenBank· DDBJ
Genomic DNA
KP010063
EMBL· GenBank· DDBJ
AKN80309.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

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