A0A0F7GQM0 · A0A0F7GQM0_9EMBE

  • Protein
    Cytochrome b
  • Gene
    Cytb
  • Status
    UniProtKB unreviewed (TrEMBL)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    2/5

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.

134550100150200250300
TypeIDPosition(s)Description
Binding site50Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site64Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site149Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site163Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site168a 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
  • Strains
    • MAR2586
    • MAR4003
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves > Neognathae > Neoaves > Telluraves > Australaves > Passeriformes > Passeroidea > Fringillidae > Emberizinae > Emberizini > Emberiza

Accessions

  • Primary accession
    A0A0F7GQM0

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane6-24Helical
Transmembrane45-65Helical
Transmembrane80-100Helical
Transmembrane107-125Helical
Transmembrane145-167Helical
Transmembrane196-217Helical
Transmembrane255-275Helical
Transmembrane287-307Helical
Transmembrane313-339Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-176Cytochrome b/b6 N-terminal region profile
Domain177-345Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    345
  • Mass (Da)
    38,454
  • Last updated
    2015-07-22 v1
  • Checksum
    B67610D15B217F09
GSLLGVCLITQIITGLLLAMHYTADTNLAFSSVAHMCRDVQFGWLIRNLHANGASFFFICIYLHIGRGIYYGSYLNKETWNVGVILLLILMATAFVGYVLPWGQMSFWGATVITNLFSAIPYIGQTLVEWAWGGFSVDNPTLTRFFALHFLLPFVIVGITLVHLTFLHETGSNNPLGIPSDCDKIPFHPYYTIKDILGFMLLLSLLVSLALFSPNLLGDPENFTPANPLVTPPHIKPEWYFLFAYAILRSIPNKLGGVLALAASILVLFLIPLLHTSKLRSMTFRPLSQILFWSLVADILILTWVGSQPVEHPFIIIGQLASLTYFTIILILFPLAALLENKLLK

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue345

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KP877723
EMBL· GenBank· DDBJ
AKG59057.1
EMBL· GenBank· DDBJ
Genomic DNA
KP877732
EMBL· GenBank· DDBJ
AKG59066.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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