Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Cytochrome b559 subunit alpha

Gene

psbE

Organism
Thermosynechococcus elongatus (strain BP-1)
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 annotation3 Publications

Cofactori

heme bUniRule annotation12 PublicationsNote: With its partner (PsbF) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids.UniRule annotation12 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi23Iron (heme axial ligand); shared with beta subunit8 PublicationsUniRule annotation2 Publications1

GO - Molecular functioni

GO - Biological processi

Keywordsi

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

Enzyme and pathway databases

BioCyciTELO197221:G1G3I-1568-MONOMER

Names & Taxonomyi

Protein namesi
Recommended name:
Cytochrome b559 subunit alphaUniRule annotation
Alternative name(s):
PSII reaction center subunit VUniRule annotation
Gene namesi
Name:psbEUniRule annotation
Ordered Locus Names:tsr1541
OrganismiThermosynechococcus elongatus (strain BP-1)
Taxonomic identifieri197221 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeThermosynechococcus
Proteomesi
  • UP000000440 Componenti: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini2 – 19Cytoplasmic1 PublicationAdd BLAST18
Transmembranei20 – 35Helical1 PublicationAdd BLAST16
Topological domaini36 – 84Lumenal1 PublicationAdd BLAST49

GO - Cellular componenti

Keywords - Cellular componenti

Membrane, Photosystem II, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemoved3 Publications
ChainiPRO_00002003432 – 84Cytochrome b559 subunit alphaAdd BLAST83

Interactioni

Subunit structurei

Heterodimer of an alpha subunit and a beta subunit. Cyanobacterial 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 PsbO, PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.UniRule annotation12 Publications

Protein-protein interaction databases

DIPiDIP-48491N
IntActiQ8DIP0, 1 interactor
STRINGi197221.tsr1541

Structurei

Secondary structure

184
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi10 – 15Combined sources6
Helixi17 – 39Combined sources23
Helixi42 – 47Combined sources6
Beta strandi54 – 56Combined sources3
Beta strandi69 – 71Combined sources3
Helixi72 – 81Combined sources10

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1S5LX-ray3.50E/e1-84[»]
1W5CX-ray3.20E/K1-84[»]
2AXTX-ray3.00E/e1-84[»]
3KZIX-ray3.60E2-84[»]
4FBYX-ray6.56E/R2-84[»]
4IXQX-ray5.70E/e1-84[»]
4IXRX-ray5.90E/e1-84[»]
4PBUX-ray5.00E/e4-84[»]
4PJ0X-ray2.44E/e1-84[»]
4RVYX-ray5.50E/e4-84[»]
4TNHX-ray4.90E/e1-84[»]
4TNIX-ray4.60E/e1-84[»]
4TNJX-ray4.50E/e1-84[»]
4TNKX-ray5.20E/e1-84[»]
4V62X-ray2.90AE/BE1-84[»]
4V82X-ray3.20AE/BE1-84[»]
5E79X-ray3.50E/e4-84[»]
5E7CX-ray4.50E/e4-84[»]
5H2FX-ray2.20E/e5-84[»]
5KAFX-ray3.00E/e1-84[»]
5KAIX-ray2.80E/e1-84[»]
5MX2X-ray2.20E/e1-84[»]
5TISX-ray2.25E/e1-84[»]
ProteinModelPortaliQ8DIP0
SMRiQ8DIP0
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ8DIP0

Family & Domainsi

Sequence similaritiesi

Belongs to the PsbE/PsbF family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105NT3 Bacteria
ENOG4111X01 LUCA
HOGENOMiHOG000254797
KOiK02707
OMAiVRYWVIH
OrthoDBiPOG091H14HV

Family and domain databases

Gene3Di1.20.5.860, 1 hit
HAMAPiMF_00642 PSII_PsbE, 1 hit
InterProiView protein in InterPro
IPR006217 PSII_cyt_b559_asu
IPR037025 PSII_cyt_b559_asu_sf
IPR006216 PSII_cyt_b559_CS
IPR013081 PSII_cyt_b559_N
IPR013082 PSII_cytb559_asu_lum
PANTHERiPTHR33391:SF1 PTHR33391:SF1, 1 hit
PfamiView protein in Pfam
PF00283 Cytochrom_B559, 1 hit
PF00284 Cytochrom_B559a, 1 hit
PIRSFiPIRSF000036 PsbE, 1 hit
TIGRFAMsiTIGR01332 cyt_b559_alpha, 1 hit
PROSITEiView protein in PROSITE
PS00537 CYTOCHROME_B559, 1 hit

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q8DIP0-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAGTTGERPF SDIITSVRYW VIHSITIPAL FIAGWLFVST GLAYDVFGTP
60 70 80
RPDSYYAQEQ RSIPLVTDRF EAKQQVETFL EQLK
Length:84
Mass (Da):9,573
Last modified:January 23, 2007 - v3
Checksum:i19C7A074624D937F
GO

Mass spectrometryi

Molecular mass is 9446±6 Da from positions 2 - 84. Determined by MALDI. 1 Publication
Molecular mass is 9440 Da from positions 2 - 84. Determined by MALDI. 1 Publication

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000039 Genomic DNA Translation: BAC09093.1
RefSeqiNP_682331.1, NC_004113.1
WP_011057381.1, NC_004113.1

Genome annotation databases

EnsemblBacteriaiBAC09093; BAC09093; BAC09093
GeneIDi1011075
KEGGitel:tsr1541
PATRICifig|197221.4.peg.1617

Similar proteinsi

Entry informationi

Entry nameiPSBE_THEEB
AccessioniPrimary (citable) accession number: Q8DIP0
Entry historyiIntegrated into UniProtKB/Swiss-Prot: May 30, 2003
Last sequence update: January 23, 2007
Last modified: April 25, 2018
This is version 118 of the entry and version 3 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families

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.

Do not show this banner again
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health