A0A1Q1M7J0 · A0A1Q1M7J0_9ARAC

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.

137050100150200250300350
TypeIDPosition(s)Description
Binding site80Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site94Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site179Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site193Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site198a ubiquinone (UniProtKB | ChEBI)

GO annotations

AspectTerm
Cellular Componentmitochondrial inner membrane
Cellular Componentrespiratory chain complex III
Molecular Functionmetal ion binding
Molecular Functionubiquinol-cytochrome-c reductase activity
Biological Processmitochondrial electron transport, ubiquinol to cytochrome c

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome b

Gene names

    • Name
      CYTB

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • AG_Aganippe_sp_Serpentine_Falls_WA
  • Taxonomic lineage
    Eukaryota > Metazoa > Ecdysozoa > Arthropoda > Chelicerata > Arachnida > Araneae > Mygalomorphae > Idiopidae > Aganippe

Accessions

  • Primary accession
    A0A1Q1M7J0

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane26-54Helical
Transmembrane74-93Helical
Transmembrane105-129Helical
Transmembrane135-154Helical
Transmembrane175-196Helical
Transmembrane226-247Helical
Transmembrane284-305Helical
Transmembrane312-332Helical
Transmembrane344-365Helical

Keywords

Interaction

Subunit

The main subunits of complex b-c1 are: cytochrome b, cytochrome c1 and the Rieske protein.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-206Cytochrome b/b6 N-terminal region profile
Domain207-370Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    370
  • Mass (Da)
    41,620
  • Last updated
    2017-04-12 v1
  • Checksum
    2DC697A555FA89D7
VRKGEIVIRVLNNILIDLPSPSSISYLWNFGSLLGVFLGVQIMTGLFLAIHFSGDVNMSFSSVVSIMRDVNGGWIIRVLHSNGASLFFVFLYYHIGRGIYYGSYFLSNVWMVGVTIFLLSMMTAFLGYVLPWGQMSFWAATVITNLLSAVPYVGSMMVEWVWGGFAVSNPTLIRFFAFHFILPFLVVVLVIVHLVYLHDGGSSNPMGLSSEADKVSFHPSFSVSDVMGFFMGGLAVMMVSIEFPYGFMDCENFISSNPLVTPAHIQPEWYFLFAYSVLRSVTSSLGGVVALVMSVMILYVLPFLMSRSFQSMALYGVSKVSFWCLVVMWMLLTWVGAREVEEPFSFLGKVFSFLYFFSYGVMWFMNELQD

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue370

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KY295355
EMBL· GenBank· DDBJ
AQM32050.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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