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Protein

Photosystem II reaction center protein L

Gene

psbL

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). 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. This subunit is found at the monomer-monomer interface and is required for correct PSII assembly and/or dimerization. This subunit may make specific contacts with lipid(s) (PubMed:16355230).UniRule annotation3 Publications

Cofactori

Note: PSII binds multiple chlorophylls, carotenoids and specific lipids.11 Publications

GO - Biological processi

Keywordsi

Biological processPhotosynthesis

Enzyme and pathway databases

BioCyciTELO197221:G1G3I-1570-MONOMER

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem II reaction center protein LUniRule annotation
Short name:
PSII-LUniRule annotation
Gene namesi
Name:psbLUniRule annotation
Ordered Locus Names:tsr1543
OrganismiThermosynechococcus elongatus (strain BP-1)
Taxonomic identifieri197221 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeThermosynechococcus
Proteomesi
  • UP000000440 Componenti: Chromosome

Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Topological domaini1 – 17Cytoplasmic1 PublicationAdd BLAST17
Transmembranei18 – 32Helical1 PublicationAdd BLAST15
Topological domaini33 – 37Lumenal1 Publication5

GO - Cellular componenti

Keywords - Cellular componenti

Membrane, Photosystem II, Reaction center, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002197901 – 37Photosystem II reaction center protein LAdd BLAST37

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-48497N
IntActiQ8DIN8, 1 interactor
STRINGi197221.tsr1543

Structurei

Secondary structure

137
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi14 – 36Combined sources23

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1S5LX-ray3.50L/l1-37[»]
2AXTX-ray3.00L/l1-37[»]
3KZIX-ray3.60L1-37[»]
4FBYX-ray6.56L/d1-37[»]
4IXQX-ray5.70L/l1-37[»]
4IXRX-ray5.90L/l1-37[»]
4PBUX-ray5.00L/l1-37[»]
4PJ0X-ray2.44L/l1-37[»]
4RVYX-ray5.50L/l1-37[»]
4TNHX-ray4.90L/l1-37[»]
4TNIX-ray4.60L/l1-37[»]
4TNJX-ray4.50L/l1-37[»]
4TNKX-ray5.20L/l1-37[»]
4V62X-ray2.90AL/BL1-37[»]
4V82X-ray3.20AL/BL1-37[»]
5E79X-ray3.50L/l1-37[»]
5E7CX-ray4.50L/l1-37[»]
5H2FX-ray2.20L/l3-37[»]
5KAFX-ray3.00L/l1-37[»]
5KAIX-ray2.80L/l1-37[»]
5MX2X-ray2.20L/l1-37[»]
5TISX-ray2.25L/l1-37[»]
ProteinModelPortaliQ8DIN8
SMRiQ8DIN8
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiQ8DIN8

Family & Domainsi

Sequence similaritiesi

Belongs to the PsbL family.UniRule annotation

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

HOGENOMiHOG000091309
KOiK02713

Family and domain databases

HAMAPiMF_01317 PSII_PsbL, 1 hit
InterProiView protein in InterPro
IPR003372 PSII_PsbL
IPR037266 PSII_PsbL_sf
PfamiView protein in Pfam
PF02419 PsbL, 1 hit
ProDomiView protein in ProDom or Entries sharing at least one domain
PD005113 PSII_PsbL, 1 hit
SUPFAMiSSF161017 SSF161017, 1 hit

Sequencei

Sequence statusi: Complete.

Q8DIN8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30 
MEPNPNRQPV ELNRTSLYLG LLLILVLALL FSSYFFN
Length:37
Mass (Da):4,297
Last modified:March 1, 2003 - v1
Checksum:i8EB1690C62528BC5
GO

Mass spectrometryi

Molecular mass is 4301±4 Da from positions 1 - 37. Determined by MALDI. 1 Publication
Molecular mass is 4299 Da from positions 1 - 37. Determined by MALDI. 1 Publication

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000039 Genomic DNA Translation: BAC09095.1
RefSeqiNP_682333.1, NC_004113.1
WP_011057383.1, NC_004113.1

Genome annotation databases

EnsemblBacteriaiBAC09095; BAC09095; BAC09095
GeneIDi1012027
KEGGitel:tsr1543
PATRICifig|197221.4.peg.1619

Similar proteinsi

Entry informationi

Entry nameiPSBL_THEEB
AccessioniPrimary (citable) accession number: Q8DIN8
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 3, 2003
Last sequence update: March 1, 2003
Last modified: April 25, 2018
This is version 96 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

Documents

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

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