I1TJ86 · I1TJ86_HYAOR

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.

135850100150200250300350
TypeIDPosition(s)Description
Binding site76Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site90Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site177Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site191Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site196a 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
      cob

Encoded on

  • Mitochondrion

Organism names

  • Taxonomic identifier
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Asparagales > Hyacinthaceae > Hyacinthoideae > Hyacintheae > Hyacinthus

Accessions

  • Primary accession
    I1TJ86

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane22-46Helical
Transmembrane71-93Helical
Transmembrane105-127Helical
Transmembrane134-158Helical
Transmembrane178-198Helical
Transmembrane219-240Helical
Transmembrane284-302Helical
Transmembrane314-334Helical
Transmembrane340-357Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-204Cytochrome b/b6 N-terminal region profile
Domain205-358Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    358
  • Mass (Da)
    39,925
  • Last updated
    2012-07-11 v1
  • Checksum
    E19E59525FD00E05
QPISSTLNQHLIDYPTPSNLSYWWGFGSLAGICLVIQIVTGVFLAMHHTPHVDLAFNSVEHIMRDVEGGWLLRYMHANGASMFLIVVHLHIFRGLYHASYSSPRELVWCLGVVIFLLMIVTAFIGYVPPWGQMSFWGATVITSLASAIPVVGDTIVTWLWGGFSVDNATLNRFFSLHYLLPLILVGASLLHLAALHQYGSNNPLGVHSEMEKIASYPYFYVKDLVGRVASAIFFSIWIFYAPNVLGHPDNYIPANPMPTPPHIVPEWYFLPIHAILRSIPDKSGGVAAIAPVSISLLALPFFKSMYVRSSSFRPIHQGIFWLLLADCLLLGWIGCQPVEAPFVTIGQISSFFFFLFFA

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue358

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
JQ421589
EMBL· GenBank· DDBJ
AFA35905.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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