D3YA55 · D3YA55_LOPBE

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 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
  • Strains
    • HMS340
    • HMS341
    • HMS345
    • HMS349
    • SIT226
  • Taxonomic lineage
    Eukaryota > Metazoa > Ecdysozoa > Arthropoda > Crustacea > Multicrustacea > Malacostraca > Eumalacostraca > Eucarida > Decapoda > Pleocyemata > Brachyura > Eubrachyura > Xanthoidea > Panopeidae > Lophopanopeus

Accessions

  • Primary accession
    D3YA55

Subcellular Location

Mitochondrion inner membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane38-61Helical
Transmembrane82-106Helical
Transmembrane126-149Helical
Transmembrane161-187Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-188Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    188
  • Mass (Da)
    19,966
  • Last updated
    2010-04-20 v1
  • Checksum
    286E3B39088F4568
GAWAGMVGTSLSLIIRAELGQPGTLIGNDQIYNVVVTAHAFVMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSLTLLLMSGMVESGVGTGWTVYPPLAAAIAHAGASVDMGIFSLHLAGVSSILGAVNFMTTVINMRSFGMTMDQMPLFVWAVFITAILLLLSLPVLAGAITMLL

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue188

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
GU443491
EMBL· GenBank· DDBJ
ADD16062.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443492
EMBL· GenBank· DDBJ
ADD16063.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443494
EMBL· GenBank· DDBJ
ADD16065.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443495
EMBL· GenBank· DDBJ
ADD16066.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443504
EMBL· GenBank· DDBJ
ADD16075.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443515
EMBL· GenBank· DDBJ
ADD16086.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443516
EMBL· GenBank· DDBJ
ADD16087.1
EMBL· GenBank· DDBJ
Genomic DNA
GU443523
EMBL· GenBank· DDBJ
ADD16094.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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