Q9HVY5 · Q9HVY5_PSEAE

Function

function

Component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), which is a respiratory chain that generates an electrochemical potential coupled to 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.

140350100150200250300350400
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 site188Fe (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 Componentmembrane
Cellular Componentplasma membrane
Cellular Componentrespiratory chain complex III
Molecular Functionmetal ion binding
Molecular Functionubiquinol-cytochrome-c reductase activity
Biological Processrespiratory electron transport chain

Keywords

Enzyme and pathway databases

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome b

Gene names

    • Ordered locus names
      PA4430

Organism names

Accessions

  • Primary accession
    Q9HVY5

Proteomes

Organism-specific databases

Subcellular Location

Membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane33-55Helical
Transmembrane82-105Helical
Transmembrane117-138Helical
Transmembrane144-163Helical
Transmembrane184-206Helical
Transmembrane245-262Helical
Transmembrane306-326Helical
Transmembrane338-358Helical
Transmembrane370-388Helical

Keywords

  • Cellular component

Phenotypes & Variants

Miscellaneous

PTM/Processing

Proteomic databases

Interaction

Subunit

The main subunits of complex b-c1 are: cytochrome b, cytochrome c1 and the Rieske protein.

Protein-protein interaction databases

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain4-216Cytochrome b/b6 N-terminal region profile
Domain226-399Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    403
  • Mass (Da)
    46,073
  • Last updated
    2001-03-01 v1
  • MD5 Checksum
    58E0E807954272DA9903AFE6D817E2AC
MNKFMAWVDARFPATKMWEDHLSKYYAPKNFNFWYFFGSLALLVLVNQILTGIWLTMSFTPSAEEAFASVEYIMRDVDYGWIIRYMHSTGASAFFIVVYLHMFRGLLYGSYQKPRELVWIFGMLIYLALMAEAFMGYLLPWGQMSYWGAQVIISLFGAIPVVGEDLAQWIRGDFLISGITLNRFFALHVIALPIVLLGLVVLHILALHEVGSNNPDGVDIKKKKDENGVPLDGIAFHPYYTVKDIVGVVVFLFIFCTVIFFFPEMGGYFLEKPNFEMANQFKTPEHIAPVWYFTPFYAILRAVPDKLMGVVAMGAAIAVLFVLPWLDRSPVRSIRYKGWLSKLWLVIFAVSFVILGYYGAQAPSPLGTTLSRVCTVLYFAFFILMPFYTRMEKTKPVPERVTG

Keywords

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
AE004091
EMBL· GenBank· DDBJ
AAG07818.1
EMBL· GenBank· DDBJ
Genomic DNA

Genome annotation databases

Similar Proteins

Disclaimer

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