A0A0K0KGT0 · A0A0K0KGT0_NUMTA

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.

134750100150200250300
TypeIDPosition(s)Description
Binding site51Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site65Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site150Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site164Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site169a 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 Processrespiratory electron transport chain

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome b

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves > Neognathae > Charadriiformes > Scolopacidae > Numenius

Accessions

  • Primary accession
    A0A0K0KGT0

Subcellular Location

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

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane53-71Helical
Transmembrane83-101Helical
Transmembrane107-125Helical
Transmembrane146-167Helical
Transmembrane197-218Helical
Transmembrane259-276Helical
Transmembrane288-308Helical
Transmembrane314-338Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-177Cytochrome b/b6 N-terminal region profile
Domain178-347Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    347
  • Mass (Da)
    38,872
  • Last updated
    2015-11-11 v1
  • Checksum
    ECB5E0323EF60404
FGSLLGICLMTQILTGLLLAMHYTADTTLAFSSVAHTCRNVQYGWLIHNLHANGASFFFICIYLHIGRGLYYGSYLYKETWNTGVILLLTLMATAFVGYVLPWGQMSFWGATVITNLFSAIPYIGQTLVEWAWGGFSVDNPTLTRFFALHFLLPFMIAGLTLIHLTFLHETGSNNPLGISSNSDKIPFHPYFSLKDILGFIIMFLPLLTLALFSPNLLGDPENFTPANPLVTPPHIKPEWYFLFAYAILRSIPNKLGGVLALAASVLILFLIPLLHKSKQRTMTFRPLSQLLFWTLTANLLILTWVGSQPVEHPFIIIGQLASLTYFTTLLLLFPLAATLENKMLNY

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KM218991
EMBL· GenBank· DDBJ
AII34117.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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