A0A5Q3A3F5 · A0A5Q3A3F5_9ROSA

  • Protein
    Cytochrome b
  • Gene
    cob
  • 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.

139350100150200250300350
TypeIDPosition(s)Description
Binding site88Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site102Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site189Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site203Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site208a 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
  • Organism
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Rosales > Rosaceae > Amygdaloideae > Maleae > Eriobotrya

Accessions

  • Primary accession
    A0A5Q3A3F5

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane34-58Helical
Transmembrane83-105Helical
Transmembrane117-140Helical
Transmembrane147-171Helical
Transmembrane191-210Helical
Transmembrane231-252Helical
Transmembrane296-314Helical
Transmembrane326-346Helical
Transmembrane352-371Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-216Cytochrome b/b6 N-terminal region profile
Domain217-387Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    393
  • Mass (Da)
    44,075
  • Last updated
    2020-02-26 v1
  • Checksum
    58A0F8A071879BCE
MTIRNQRFSLLKQPISSTLNQHLIDYPTPSNLSYWWGFGPLAGICLVIQIVTGVFLAMHHTPHVDLAFNSVEHIMRDVEGGWLLRYMHANGASMFLIVVHLHIFRGLYHASYSSPREFVRCLGVVIFLLMIVTAFTGYVLPWGQMSFWGATVITSLASAIPVVGDTIVTWLWGGFSVDNATLNRFFSLHHLLPFILVGASLLHLAALHQYGSNNPLGVHSEMDKIYFYPYFYVKDLVGWVAFAIFSSIWIFYAPNVLGHPDNYIPANPMPTPPHIVPEWYFLPIHAILRSIPDKSGGVAAIAPVFICLLALPFFKSMYVRSSSFRPIHQGIFWLLLADCLLLGWIGCQPVEAPFVTIGQISPLVFFLFFAITPIPGQVGRGIPNSYTDETDHI

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
MN481990
EMBL· GenBank· DDBJ
QGI24956.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

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