Q1XAJ6 · Q1XAJ6_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

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
  • Strains
    • Hap1
    • Hap2
    • Hap3
    • Hap4
    • Hap6
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Actinopterygii > Neopterygii > Teleostei > Ostariophysi > Cypriniformes > Cyprinidae > Schizothoracinae > Schizothorax

Accessions

  • Primary accession
    Q1XAJ6

Subcellular Location

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
    Fragment
  • Length
    380
  • Mass (Da)
    42,648
  • Last updated
    2006-05-02 v1
  • Checksum
    CE1BF9BE9692C27E
MASLRKTHPLIKIANDALVDLPAPSNISVWWNFGSLLGLCLATQILTGLFLAMHYTSDISTAFSSVTHICRDVNYGWLIRNIHANGASFFFICIYMHIARGLYYGSYLYKETWNIGVVLLLLVMMTAFVGYVLPWGQMSFWGATVITNLLSAVPYMGDMLVQWIWGGFSVDNATLTRFFAFHFLLPFVIAAATVLHLLFLHETGSNNPIGLNSDADKISFHPYFTYKDLLGFVVMLLALTLLALFSPNLLGDPENFTPANPLVTPPHIQPEWYFLFAYAILRSIPNKLGGVLALLFSILVLMVVPLLHTSKQRGLTFRPITQFLFWTLIADMIILTWIGGMPVEHPFIIIGQVASVLYFALFLVFIPLAGWLENKALEWA

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue380

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AY954280
EMBL· GenBank· DDBJ
AAY35047.1
EMBL· GenBank· DDBJ
Genomic DNA
DQ126124
EMBL· GenBank· DDBJ
AAZ95820.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796151
EMBL· GenBank· DDBJ
AJW77478.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796152
EMBL· GenBank· DDBJ
AJW77479.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796153
EMBL· GenBank· DDBJ
AJW77480.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796154
EMBL· GenBank· DDBJ
AJW77481.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796156
EMBL· GenBank· DDBJ
AJW77483.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796157
EMBL· GenBank· DDBJ
AJW77484.1
EMBL· GenBank· DDBJ
Genomic DNA
KP796158
EMBL· GenBank· DDBJ
AJW77485.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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