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Protein

Cytochrome b559 subunit beta

Gene

psbF

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: -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:SF3 PTHR33391:SF3, 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: October 25, 2017
This is version 91 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

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