A0A143BRM3 · A0A143BRM3_9ECHI

  • Protein
    Cytochrome c oxidase subunit 1
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    2/5

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

heme (UniProtKB | Rhea| CHEBI:30413 )

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

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • F168826
  • Taxonomic lineage
    Eukaryota > Metazoa > Echinodermata > Eleutherozoa > Asterozoa > Ophiuroidea > Myophiuroidea > Metophiurida > Ophintegrida > Amphilepidida > Ophiurina > Ophiolepidina > Ophiolepididae > Ophioceres

Accessions

  • Primary accession
    A0A143BRM3

Subcellular Location

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

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane15-37Helical
Transmembrane57-83Helical
Transmembrane148-171Helical
Transmembrane183-210Helical
Transmembrane230-258Helical
Transmembrane270-291Helical
Transmembrane303-321Helical
Transmembrane341-360Helical
Transmembrane380-400Helical
Transmembrane412-430Helical
Transmembrane450-475Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain6-477Cytochrome oxidase subunit I profile

Sequence similarities

Belongs to the heme-copper respiratory oxidase family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    477
  • Mass (Da)
    52,269
  • Last updated
    2016-06-08 v1
  • Checksum
    0C7B7E36A10FD43F
NYLQRWLFSTNHKDIGTLYLIFGAWAGTVGTAMSNIIRVELSQPGSLIQDDQVYNVMVTAHAFVMIFFMVMPIMIGGFGNWLVPLMLGAPDMAFPRMNNMSFWLLPPSFLLLIASAGNESGVGTGWTIYPPLSGPIAHAGGCVDLAIFSLHLAGASSIMASINFITTIINMRAPGMTMDRIPLFIWSIFITTILLLLSLPVLAGAITMLLTDRNINTTFFDPTGGGDPILFQHLFWFFGHPEVYILILPGFGIISHIVTSRTGKQQPFGYLGMMYAMIAIGVLGFIVWAHHMFTVGLDVDTRAYFTAATMIIAIPTGVKIFSWLATLQGVPFNLNNAHPSLLWALGFIFLFTVGGLTGIVLSNSSLNVALHDTYYVTAHFHYVLSMGAVFAIFAGFNHWFSLFTGNQLDQSGATAHFIIMFIGVNLTFFPQHFLGLAGMPRRYSDYPDAFAFWNTASSLGSLLSFIGTIGFLAIITL

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue477

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KU895323
EMBL· GenBank· DDBJ
AMW07854.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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