K4K2Q2 · K4K2Q2_9TELE

Function

function

Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex) that is part of the mitochondrial respiratory chain. The b-c1 complex mediates electron transfer from ubiquinol to cytochrome c. Contributes to the generation of a proton gradient across the mitochondrial membrane that is then used for ATP synthesis.

Cofactor

Protein has several cofactor binding sites:
heme b (UniProtKB | Rhea| CHEBI:60344 )

Note: Binds 2 heme groups non-covalently.
heme (UniProtKB | Rhea| CHEBI:30413 )

Note: Binds 2 heme groups non-covalently.

Features

Showing features for binding site.

138050100150200250300350
TypeIDPosition(s)Description
Binding site83Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site97Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site182Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site196Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site201a ubiquinone (UniProtKB | ChEBI)

GO annotations

all annotationsall molecular functionvirus receptor activitydna bindingrna bindingcytoskeletal motor activitycatalytic activitygtpase activitystructural molecule activitytransporter activitycytoskeletal protein bindinglipid bindingcyclase activityantioxidant activityoxidoreductase activitytransferase activityhydrolase activitylyase activityisomerase activityligase activityprotein tag activitycargo receptor activityhistone bindingprotein folding chaperonetranslation regulator activitynutrient reservoir activityreceptor ligand activitymolecular transducer activitymolecular adaptor activitytoxin activitycell adhesion mediator activitymolecular function regulator activityvirus coreceptor activitycatalytic activity, acting on a proteincatalytic activity, acting on dnacatalytic activity, acting on rnamolecular carrier activitytranscription regulator activitygeneral transcription initiation factor activitymolecular sensor activitymolecular sequestering activityatp-dependent activityother molecular functionall biological processmitotic cell cyclecytokinesiscytoplasmic translationimmune system processmuscle system processcirculatory system processrenal system processrespiratory system processcarbohydrate metabolic processgeneration of precursor metabolites and energydna replicationdna repairdna recombinationchromatin organizationdna-templated transcriptionregulation of dna-templated transcriptiontrna metabolic processprotein foldingprotein glycosylationamino acid metabolic processmodified amino acid metabolic processlipid metabolic processvitamin metabolic processsulfur compound metabolic processintracellular protein transportnucleocytoplasmic transportautophagyinflammatory responsemitochondrion organizationcytoskeleton organizationmicrotubule-based movementperoxisome organizationlysosome organizationchromosome segregationcell adhesionestablishment or maintenance of cell polarityprogrammed cell deathphotosynthesismrna metabolic processsnrna metabolic processvesicle-mediated transportreproductive processdigestive system processsignalingcell differentiationprotein catabolic processextracellular matrix organizationregulatory ncrna-mediated gene silencingtelomere organizationcell junction organizationwound healingribosome biogenesiscilium organizationanatomical structure developmentcell motilitynervous system processendocrine processprotein maturationtransmembrane transportnucleobase-containing small molecule metabolic processhepaticobiliary system processmembrane organizationprotein-containing complex assemblycell wall organization or biogenesisnitrogen cycle metabolic processprotein localization to plasma membranedefense response to other organismdetoxificationmeiotic nuclear divisionmitotic nuclear divisionmitochondrial gene expressioncarbohydrate derivative metabolic processother biological processall cellular componentnuclear chromosomeextracellular regionextracellular spacecell wallnucleusnuclear envelopenucleoplasmchromosomenucleolusmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuslipid dropletmicrotubule organizing centercytosolribosomecytoskeletonplasma membraneciliumplastidthylakoidexternal encapsulating structureextracellular matrixcytoplasmic vesicleorganelleother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentmitochondrial inner membrane
Cellular Componentrespiratory chain complex III
Molecular Functionmetal ion binding
Molecular Functionubiquinol-cytochrome-c reductase activity
Biological Processrespiratory electron transport chain

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome b

Gene names

    • Name
      cytb
    • Synonyms
      CYTB

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Strains
    • #97
    • SVET17_001
    • SVET17_002
    • SVET17_003
    • SVET17_004
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Teleostei > Protacanthopterygii > Salmoniformes > Salmonidae > Salmoninae > Salvethymus

Accessions

  • Primary accession
    K4K2Q2

Subcellular Location

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

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane29-52Helical
Transmembrane87-107Helical
Transmembrane113-133Helical
Transmembrane145-166Helical
Transmembrane178-200Helical
Transmembrane229-250Helical
Transmembrane288-308Helical
Transmembrane320-341Helical
Transmembrane347-372Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-209Cytochrome b/b6 N-terminal region profile
Domain210-380Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    380
  • Mass (Da)
    42,344
  • Last updated
    2013-01-09 v1
  • Checksum
    19B0284D48D93EFF
MANLRKTHPLLKIANDALVDLPAPSNISVWWNFGSLLGLCLATQILTGLFLAMHYTSDISTAFSSVCHICRDVSYGWLIRNIHANGASFFFICIYMHIARGLYYGSYLYKETWNIGVVLLLLTMMTAFVGYVLPWGQMSFWGATVITNLFSAVPYVGGALVQWIWGGFSVDSATLTRFFAFHFLFPFVIAAATVLHLLFLHETGSNNPAGINSDADKISFHPYFSYKDLLGFVAMLLGLTALALFTPNLLGDPDNFTPANPLVTPPHIKPEWYFLFAYAILRSIPNKLGGVLALLFSILVLMVVPILHTSKQRGLTFRPLTQFLFWTLVADMLILTWIGGMPVEHPFIIIGQVASVIYFTIFLILAPLAGWAENKALEWT

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
JX960859
EMBL· GenBank· DDBJ
AFU93285.1
EMBL· GenBank· DDBJ
Genomic DNA
MH430807
EMBL· GenBank· DDBJ
QBF58665.1
EMBL· GenBank· DDBJ
Genomic DNA
MH430808
EMBL· GenBank· DDBJ
QBF58666.1
EMBL· GenBank· DDBJ
Genomic DNA
MH430809
EMBL· GenBank· DDBJ
QBF58667.1
EMBL· GenBank· DDBJ
Genomic DNA
MH430810
EMBL· GenBank· DDBJ
QBF58668.1
EMBL· GenBank· DDBJ
Genomic DNA
MK695627
EMBL· GenBank· DDBJ
QIE12074.1
EMBL· GenBank· DDBJ
Genomic DNA
MK695628
EMBL· GenBank· DDBJ
QIE12087.1
EMBL· GenBank· DDBJ
Genomic DNA
MK695629
EMBL· GenBank· DDBJ
QIE12100.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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