D2IFJ8 · D2IFJ8_9PETR

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.

137750100150200250300350
TypeIDPosition(s)Description
Binding site87Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site101Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site186Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site200Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site205a 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

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • IgagCaddo1
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Cyclostomata > Hyperoartia > Petromyzontiformes > Petromyzontidae > Ichthyomyzon

Accessions

  • Primary accession
    D2IFJ8

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane34-60Helical
Transmembrane81-102Helical
Transmembrane117-137Helical
Transmembrane182-204Helical
Transmembrane233-250Helical
Transmembrane292-311Helical
Transmembrane323-342Helical
Transmembrane354-373Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain4-213Cytochrome b/b6 N-terminal region profile
Domain214-377Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    377
  • Mass (Da)
    42,393
  • Last updated
    2010-02-09 v1
  • Checksum
    42F7EBD00854D4EF
MSHLPSIIRKNNPLLSLGNNMLVDLPSPANISAWWNFGSLLSLCLIIQIITGLILAMHYTANTELAFSSVMHICRDVNNGWLMRNLHANGASMFFICIYAHIGRGIYYGSYLYKETWNIGVILFTLTAATAFVGYVLPWGQMSFWGATVITNLISATPYVGDDIVVWLWGGFSVSNATLTRFFTFHFILPFILTAMTMIHIMFLHQTGSSNPMGVNSNLDKIQFHPYFSFKDILGFVILLSILFMISLLAPNTLGEPDNFIFANPLSTPPHIKPEWYFLFAYAILRSIPNKLGGVLALVMAIMILLIIPLTHTSKQRSMQFRPLAQTMFWILIANLVLLTWLGGEPAEYPFTSMTQIASTVYFLIFILVFPTLGHLE

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue377

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
GQ206169
EMBL· GenBank· DDBJ
ACX94258.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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