A0A0C1V6J6 · A0A0C1V6J6_9CYAN

Function

function

This b-type cytochrome is tightly associated with the reaction center of photosystem II (PSII). PSII is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H2O, generating O2 and a proton gradient subsequently used for ATP formation. It consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation.

Caution

The sequence shown here is derived from an EMBL/GenBank/DDBJ whole genome shotgun (WGS) entry which is preliminary data.

Cofactor

heme b (UniProtKB | Rhea| CHEBI:60344 )

Note: With its partner (PsbF) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids.

Features

Showing features for binding site.

1821020304050607080MAGDTGERPFGDIITSIRYWVIHSVTIPALFIAGWLFVSTGLAYDAFGTPRPNEYYQSNQMELPIVSDRYEAEQQIKEFLGQ
TypeIDPosition(s)Description
Binding site23Fe (UniProtKB | ChEBI) of heme (UniProtKB | ChEBI); ligand shared with beta subunit; axial binding residue

GO annotations

AspectTerm
Cellular Componentphotosystem II reaction center
Cellular Componentplasma membrane-derived thylakoid membrane
Molecular Functionelectron transfer activity
Molecular Functionheme binding
Molecular Functioniron ion binding
Biological Processphotosynthetic electron transport chain

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Cytochrome b559 subunit alpha
  • Alternative names
    • PSII reaction center subunit V

Gene names

    • Name
      psbE
    • ORF names
      QQ91_012090

Organism names

  • Taxonomic identifier
  • Strain
    • BDU141951
  • Taxonomic lineage
    Bacteria > Cyanobacteriota > Cyanophyceae > Oscillatoriophycideae > Oscillatoriales > Oscillatoriaceae > Lyngbya

Accessions

  • Primary accession
    A0A0C1V6J6

Proteomes

Subcellular Location

Cellular thylakoid membrane
; Single-pass membrane protein
Membrane
; Single-pass membrane protein

Features

Showing features for transmembrane.

TypeIDPosition(s)Description
Transmembrane20-44Helical

Keywords

Interaction

Subunit

Heterodimer of an alpha subunit and a beta subunit.
Heterodimer of an alpha subunit and beta subunit. PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Psb30/Ycf12, peripheral proteins PsbO, CyanoQ (PsbQ), PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.

Family & Domains

Features

Showing features for domain.

TypeIDPosition(s)Description
Domain6-34Photosystem II cytochrome b559 N-terminal
Domain42-79Photosystem II cytochrome b559 alpha subunit lumenal region

Sequence similarities

Belongs to the PsbE/PsbF family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    82
  • Mass (Da)
    9,319
  • Last updated
    2015-04-01 v1
  • MD5 Checksum
    B50549A4FF8E340E1CDA4C2AE6BBF0CB
MAGDTGERPFGDIITSIRYWVIHSVTIPALFIAGWLFVSTGLAYDAFGTPRPNEYYQSNQMELPIVSDRYEAEQQIKEFLGQ

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
JTHE02000003
EMBL· GenBank· DDBJ
NEV67856.1
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