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Protein

Photosystem II reaction center protein H

Gene

psbH

Organism
Thermosynechococcus elongatus (strain BP-1)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

One of the components of the core complex of photosystem II (PSII), required for its stability and/or assembly. 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 annotation4 Publications

Cofactori

Note: PSII binds multiple chlorophylls, carotenoids and specific lipids.10 Publications

GO - Molecular functioni

GO - Biological processi

Keywordsi

Biological processPhotosynthesis

Enzyme and pathway databases

BioCyciTELO197221:G1G3I-1410-MONOMER

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem II reaction center protein HUniRule annotation
Short name:
PSII-HUniRule annotation
Gene namesi
Name:psbHUniRule annotation
Ordered Locus Names:tsl1386
OrganismiThermosynechococcus elongatus (strain BP-1)
Taxonomic identifieri197221 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeThermosynechococcus
Proteomesi
  • UP000000440 Componenti: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini2 – 30Cytoplasmic1 PublicationAdd BLAST29
Transmembranei31 – 44Helical1 PublicationAdd BLAST14
Topological domaini45 – 66Lumenal1 PublicationAdd BLAST22

GO - Cellular componenti

Keywords - Cellular componenti

Membrane, Photosystem II, Thylakoid

Pathology & Biotechi

Disruption phenotypei

Not essential for photoautotrophic growth, however PSII is less stable, a considerable amount is missing the oxygen evolving complex, and it is missing PsbX.1 Publication

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemoved3 Publications
ChainiPRO_00000705462 – 66Photosystem II reaction center protein HAdd BLAST65

Interactioni

Subunit structurei

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 annotation9 Publications

Protein-protein interaction databases

DIPiDIP-48493N
IntActiQ8DJ43, 1 interactor
STRINGi197221.tsl1386

Structurei

Secondary structure

166
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi6 – 11Combined sources6
Helixi12 – 15Combined sources4
Turni24 – 27Combined sources4
Helixi28 – 49Combined sources22
Turni56 – 58Combined sources3
Helixi62 – 64Combined sources3

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1S5LX-ray3.50H/h1-66[»]
2AXTX-ray3.00H/h1-66[»]
3KZIX-ray3.60H2-66[»]
4FBYX-ray6.56H/W2-66[»]
4IXQX-ray5.70H/h1-66[»]
4IXRX-ray5.90H/h1-66[»]
4PBUX-ray5.00H/h2-66[»]
4PJ0X-ray2.44H/h1-66[»]
4RVYX-ray5.50H/h2-66[»]
4TNHX-ray4.90H/h1-66[»]
4TNIX-ray4.60H/h1-66[»]
4TNJX-ray4.50H/h1-66[»]
4TNKX-ray5.20H/h1-66[»]
4V62X-ray2.90AH/BH1-66[»]
4V82X-ray3.20AH/BH1-66[»]
5E79X-ray3.50H/h2-66[»]
5E7CX-ray4.50H/h2-66[»]
5H2FX-ray2.20H/h2-64[»]
5KAFX-ray3.00H/h1-66[»]
5KAIX-ray2.80H/h2-64[»]
5MX2X-ray2.20H/h1-66[»]
5TISX-ray2.25H/h1-66[»]
ProteinModelPortaliQ8DJ43
SMRiQ8DJ43
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ8DJ43

Family & Domainsi

Sequence similaritiesi

Belongs to the PsbH family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiENOG4105WIA Bacteria
ENOG41123BF LUCA
HOGENOMiHOG000246916
KOiK02709
OMAiPLMAVFM

Family and domain databases

Gene3Di1.20.5.880, 1 hit
HAMAPiMF_00752 PSII_PsbH, 1 hit
InterProiView protein in InterPro
IPR001056 PSII_PsbH
IPR036863 PSII_PsbH_sf
PANTHERiPTHR34469 PTHR34469, 1 hit
PfamiView protein in Pfam
PF00737 PsbH, 1 hit
ProDomiView protein in ProDom or Entries sharing at least one domain
PD003584 PSII_PsbH, 1 hit
SUPFAMiSSF161025 SSF161025, 1 hit

Sequencei

Sequence statusi: Complete.

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

Q8DJ43-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MARRTWLGDI LRPLNSEYGK VAPGWGTTPL MAVFMGLFLV FLLIILEIYN
60
STLILDGVNV SWKALG
Length:66
Mass (Da):7,354
Last modified:March 1, 2003 - v1
Checksum:iA7558EDCD943741D
GO

Mass spectrometryi

Molecular mass is 7227±5 Da from positions 2 - 66. Determined by MALDI. 1 Publication
Molecular mass is 7223 Da from positions 2 - 66. Determined by MALDI. 1 Publication
Molecular mass is 7178 Da from positions 2 - 66. Determined by MALDI. Missing initiator Met and CO2.1 Publication

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000039 Genomic DNA Translation: BAC08938.1
RefSeqiNP_682176.1, NC_004113.1
WP_011057226.1, NC_004113.1

Genome annotation databases

EnsemblBacteriaiBAC08938; BAC08938; BAC08938
GeneIDi1011628
KEGGitel:tsl1386
PATRICifig|197221.4.peg.1458

Similar proteinsi

Entry informationi

Entry nameiPSBH_THEEB
AccessioniPrimary (citable) accession number: Q8DJ43
Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 15, 2004
Last sequence update: March 1, 2003
Last modified: April 25, 2018
This is version 103 of the entry and version 1 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
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Main funding by: National Institutes of Health