A0A3G1J741 · A0A3G1J741_TRIBN

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.

135950100150200250300350
TypeIDPosition(s)Description
Binding site71Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site85Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site170Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site184Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site189a 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

Accessions

  • Primary accession
    A0A3G1J741

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane18-44Helical
Transmembrane65-86Helical
Transmembrane101-121Helical
Transmembrane128-145Helical
Transmembrane165-188Helical
Transmembrane217-238Helical
Transmembrane276-296Helical
Transmembrane308-328Helical
Transmembrane334-357Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-197Cytochrome b/b6 N-terminal region profile
Domain198-359Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    359
  • Mass (Da)
    39,957
  • Last updated
    2019-02-13 v1
  • Checksum
    46491C5B1A1C1A60
IANHALVDLPTPSNISALWNFGSLLGLCLITQILTGLFLAMHYTSDISTAFSSVAHICRDVNYGWLIRSLHANGASFFFICIYMHIARGLYYGSYLYKETWNIGVVLLLLVMATAFVGYVLPWGQMSFWGATVITNLMSAVPYMGDTLVQWIWGGFSVDNATLTRFFAFHFLLPFVIAGATILHLLFLHETGSNNPAGLNSDADKISFHPYFSYKDLLGFVVMLLALTSLALFSPNLLGDPDNFTPANPLVTPPHIQPEWYFLFAYAILRSIPNKLGGVLALLFSILVLMVVPILHTSKQRGLTFRPMTQFLFWTLVADMIILTWIGGMPVEHPYVIIGQVASTLYFALFLILVPLAGW

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue359

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KY250596
EMBL· GenBank· DDBJ
ATC69224.1
EMBL· GenBank· DDBJ
Genomic DNA
KY250599
EMBL· GenBank· DDBJ
ATC69227.1
EMBL· GenBank· DDBJ
Genomic DNA
KY250603
EMBL· GenBank· DDBJ
ATC69231.1
EMBL· GenBank· DDBJ
Genomic DNA
KY250605
EMBL· GenBank· DDBJ
ATC69233.1
EMBL· GenBank· DDBJ
Genomic DNA
KY250606
EMBL· GenBank· DDBJ
ATC69234.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.
We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.
Help