S5FI24 · S5FI24_9SAUR

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.

136150100150200250300350
TypeIDPosition(s)Description
Binding site68Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site82Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site167Fe (UniProtKB | ChEBI) of heme b b562 (UniProtKB | ChEBI); axial binding residue
Binding site181Fe (UniProtKB | ChEBI) of heme b b566 (UniProtKB | ChEBI); axial binding residue
Binding site186a 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

  • Taxonomic identifier
  • Strain
    • K16
  • Taxonomic lineage
    Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Archelosauria > Testudinata > Testudines > Cryptodira > Durocryptodira > Americhelydia > Chelydroidea > Kinosternidae > Kinosternon

Accessions

  • Primary accession
    S5FI24

Subcellular Location

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane20-41Helical
Transmembrane62-83Helical
Transmembrane98-118Helical
Transmembrane125-150Helical
Transmembrane162-185Helical
Transmembrane214-235Helical
Transmembrane273-292Helical
Transmembrane304-325Helical
Transmembrane331-351Helical

Keywords

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain1-194Cytochrome b/b6 N-terminal region profile
Domain195-361Cytochrome b/b6 C-terminal region profile

Sequence similarities

Belongs to the cytochrome b family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Fragment
  • Length
    361
  • Mass (Da)
    40,713
  • Last updated
    2013-10-16 v1
  • MD5 Checksum
    4E55CAAA0C15A79639E9FBD623973BC1
NSFIDLPSPSNISAWWNFGSLLGTCLALQIITGIFLAMHYSSDMSLAFSSITHTIRDVHYGWLIRNLHANGASLFFMCIYMHIGRGIYYGSYLYKETWNTGVMLLLLTMATAFMGYVLPWGQMSFWGATVITNLLSAIPYIGTSLVQWIWGGFSVDNATLTRFFTLHFLLPFTIAGLAMMHLLFLHETGSNNPTGLNSNTDKIPFHPYFSYKDLLGMILMLALLLMLTLFSPNLLGDPDNFIPANPLITPPHIKPEWYFLFAYAILRSIPNKLGGVLALLSSILILFMLPTLHTSKQRTTMFRPFTQTLFWMLVADLLILTWIGGQPVENPFILIGQMASITYFTILLVLMPMTGLMENKM

Features

Showing features for non-terminal residue.

TypeIDPosition(s)Description
Non-terminal residue1
Non-terminal residue361

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
KF301386
EMBL· GenBank· DDBJ
AGQ43424.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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