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Protein

Cytochrome b559 subunit beta

Gene

psbF

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

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.UniRule annotation

Cofactori

heme bUniRule annotationNote: With its partner (PsbE) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi18Iron (heme axial ligand); shared with alpha subunitUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processElectron transport, Photosynthesis, Transport
LigandHeme, Iron, Metal-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome b559 subunit betaUniRule annotation
Alternative name(s):
PSII reaction center subunit VIUniRule annotation
Gene namesi
Name:psbFUniRule annotation
Ordered Locus Names:AtCg00570
Encoded oniPlastid; Chloroplast
OrganismiArabidopsis thaliana (Mouse-ear cress)
Taxonomic identifieri3702 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
Proteomesi
  • UP000006548 Componenti: Chloroplast

Organism-specific databases

AraportiATCG00570.
TAIRilocus:504954680. ATCG00570.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Chloroplast Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertion Graphics by Christian Stolte; Source: COMPARTMENTS

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Transmembranei14 – 30HelicalUniRule annotationAdd BLAST17

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem II, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002003551 – 39Cytochrome b559 subunit betaAdd BLAST39

Proteomic databases

PaxDbiP62095.

Expressioni

Gene expression databases

ExpressionAtlasiP62095. baseline and differential.
GenevisibleiP62095. AT.

Interactioni

Subunit structurei

Heterodimer of an alpha subunit and a 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, Ycf12, at least 3 peripheral proteins of the oxygen-evolving complex and a large number of cofactors. It forms dimeric complexes.UniRule annotation

Protein-protein interaction databases

STRINGi3702.ATCG00570.1.

Structurei

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
5MDXelectron microscopy5.30F/f1-39[»]
ProteinModelPortaliP62095.
SMRiP62095.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the PsbE/PsbF family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG410J741. Eukaryota.
ENOG410XVPP. LUCA.
HOGENOMiHOG000091420.
InParanoidiP62095.
KOiK02708.
OrthoDBiEOG0936119B.

Family and domain databases

HAMAPiMF_00643. PSII_PsbF. 1 hit.
InterProiView protein in InterPro
IPR006241. PSII_cyt_b559_bsu.
IPR006216. PSII_cyt_b559_CS.
IPR013081. PSII_cyt_b559_N.
PANTHERiPTHR33391:SF13. PTHR33391:SF13. 1 hit.
PfamiView protein in Pfam
PF00283. Cytochrom_B559. 1 hit.
PIRSFiPIRSF000037. PsbF. 1 hit.
TIGRFAMsiTIGR01333. cyt_b559_beta. 1 hit.
PROSITEiView protein in PROSITE
PS00537. CYTOCHROME_B559. 1 hit.

Sequencei

Sequence statusi: Complete.

P62095-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30 
MTIDRTYPIF TVRWLAVHGL AVPTVSFLGS ISAMQFIQR
Length:39
Mass (Da):4,424
Last modified:August 13, 1987 - v1
Checksum:iF61251852D7E1D6F
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP000423 Genomic DNA. Translation: BAA84401.1.
AY007473 Genomic DNA. Translation: AAG26975.1.
RefSeqiNP_051075.1. NC_000932.1.

Genome annotation databases

EnsemblPlantsiATCG00570.1; ATCG00570.1; ATCG00570.
GeneIDi844746.
GrameneiATCG00570.1; ATCG00570.1; ATCG00570.
KEGGiath:ArthCp038.

Similar proteinsi

Entry informationi

Entry nameiPSBF_ARATH
AccessioniPrimary (citable) accession number: P62095
Secondary accession number(s): P05172, Q8HS05
Entry historyiIntegrated into UniProtKB/Swiss-Prot: August 13, 1987
Last sequence update: August 13, 1987
Last modified: August 30, 2017
This is version 90 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. Arabidopsis thaliana
    Arabidopsis thaliana: entries and gene names
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families