A0A0A0N2S8 · A0A0A0N2S8_9DINO

Function

function

Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions.

Cofactor

Protein has several cofactor binding sites:
heme b (UniProtKB | Rhea| CHEBI:60344 )

Note: Binds 2 heme b groups non-covalently with two histidine residues as axial ligands.
heme c (UniProtKB | Rhea| CHEBI:61717 )

Note: Binds one heme group covalently by a single cysteine link with no axial amino acid ligand.

GO annotations

all annotationsall molecular functionvirus receptor activitydna bindingrna bindingcytoskeletal motor activitycatalytic activitygtpase activitystructural molecule activitytransporter activitycytoskeletal protein bindinglipid bindingcyclase activityantioxidant activityoxidoreductase activitytransferase activityhydrolase activitylyase activityisomerase activityligase activityprotein tag activitycargo receptor activityhistone bindingprotein folding chaperonetranslation regulator activitynutrient reservoir activityreceptor ligand activitymolecular transducer activitymolecular adaptor activitytoxin activitycell adhesion mediator activitymolecular function regulator activityvirus coreceptor activitycatalytic activity, acting on a proteincatalytic activity, acting on dnacatalytic activity, acting on rnamolecular carrier activitytranscription regulator activitygeneral transcription initiation factor activitymolecular sensor activitymolecular sequestering activityatp-dependent activityother molecular functionall biological processmitotic cell cyclecytokinesiscytoplasmic translationimmune system processmuscle system processcirculatory system processrenal system processrespiratory system processcarbohydrate metabolic processgeneration of precursor metabolites and energydna replicationdna repairdna recombinationchromatin organizationdna-templated transcriptionregulation of dna-templated transcriptiontrna metabolic processprotein foldingprotein glycosylationamino acid metabolic processmodified amino acid metabolic processlipid metabolic processvitamin metabolic processsulfur compound metabolic processintracellular protein transportnucleocytoplasmic transportautophagyinflammatory responsemitochondrion organizationcytoskeleton organizationmicrotubule-based movementperoxisome organizationlysosome organizationchromosome segregationcell adhesionestablishment or maintenance of cell polarityprogrammed cell deathphotosynthesismrna metabolic processsnrna metabolic processvesicle-mediated transportreproductive processdigestive system processsignalingcell differentiationprotein catabolic processextracellular matrix organizationregulatory ncrna-mediated gene silencingtelomere organizationcell junction organizationwound healingribosome biogenesiscilium organizationanatomical structure developmentcell motilitynervous system processendocrine processprotein maturationtransmembrane transportnucleobase-containing small molecule metabolic processhepaticobiliary system processmembrane organizationprotein-containing complex assemblycell wall organization or biogenesisnitrogen cycle metabolic processprotein localization to plasma membranedefense response to other organismdetoxificationmeiotic nuclear divisionmitotic nuclear divisionmitochondrial gene expressioncarbohydrate derivative metabolic processother biological processall cellular componentnuclear chromosomeextracellular regionextracellular spacecell wallnucleusnuclear envelopenucleoplasmchromosomenucleolusmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuslipid dropletmicrotubule organizing centercytosolribosomecytoskeletonplasma membraneciliumplastidthylakoidexternal encapsulating structureextracellular matrixcytoplasmic vesicleorganelleother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentchloroplast thylakoid membrane
Molecular Functionelectron transfer activity
Molecular Functionmetal ion binding
Molecular Functionoxidoreductase activity
Biological Processphotosynthesis
Biological Processrespiratory electron transport chain

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome b6

Gene names

    • Name
      petB

Encoded on

  • Chloroplast

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • Mf1.05b
  • Taxonomic lineage
    Eukaryota > Sar > Alveolata > Dinophyceae > Suessiales > Symbiodiniaceae > Symbiodinium

Accessions

  • Primary accession
    A0A0A0N2S8

Subcellular Location

Plastid, chloroplast thylakoid membrane
; Multi-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane31-55Helical
Transmembrane61-80Helical
Transmembrane92-109Helical
Transmembrane115-139Helical
Transmembrane160-180Helical
Transmembrane186-207Helical

Keywords

Interaction

Subunit

The 4 large subunits of the cytochrome b6-f complex are cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and PetN. The complex functions as a dimer.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain3-218Cytochrome b/b6 N-terminal region profile

Sequence similarities

Belongs to the cytochrome b family. PetB subfamily.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    218
  • Mass (Da)
    24,127
  • Last updated
    2015-02-04 v1
  • Checksum
    71A9296A444E6F14
MWLYDWSEEGLEIQCIGDDILGKLVPPHVNIFYCFGGVVSLLLLFQIISGLGLTMYYTPSVVSAFSSVLNIVGQVYLGWLNRSIHRWSGSSMVSALILHAFRVYLTGGFKKARELIWMTGIILGVCTVLFGVTGYSLAWDQVGYWACKIVTGVPEGLDKLLFGVGFLLVLIIRGGFSVSSGRLTRFYSIHTFLLPIVTLSLVIIHFIQIRKQGISGPL

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
JX094309
EMBL· GenBank· DDBJ
AGG19290.1
EMBL· GenBank· DDBJ
Genomic DNA
JX094310
EMBL· GenBank· DDBJ
AGG19291.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

Disclaimer

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