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Protein

Photosystem II manganese-stabilizing polypeptide

Gene

psbO

Organism
Thermosynechococcus elongatus (strain BP-1)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Part of the oxygen-evolving complex associated with photosystem II (PSII). PSII is a light-driven water plastoquinone oxidoreductase, using light energy to abstract electrons from H2O, generating a proton gradient subsequently used for ATP formation.3 Publications

Cofactori

Note: PSII binds multiple chlorophylls, carotenoids and specific lipids.9 Publications

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Biological processi

Photosynthesis

Names & Taxonomyi

Protein namesi
Recommended name:
Photosystem II manganese-stabilizing polypeptide
Short name:
MSP
Gene namesi
Name:psbO
Ordered Locus Names:tll0444
OrganismiThermosynechococcus elongatus (strain BP-1)
Taxonomic identifieri197221 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaSynechococcalesSynechococcaceaeThermosynechococcus
Proteomesi
  • UP000000440 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Membrane, Photosystem II, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 262 PublicationsAdd BLAST26
ChainiPRO_000002956727 – 272Photosystem II manganese-stabilizing polypeptideAdd BLAST246

Interactioni

Subunit structurei

The cyanobacterial oxygen-evolving complex is composed of PsbO, PsbP, PsbQ, PsbV and PsbU. PsbP and PsbQ are not seen in the crystal structures; however there is biochemical evidence that they are part of the OEC (By similarity). 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, 3 peripheral proteins PsbO, PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.By similarity9 Publications

Protein-protein interaction databases

DIPiDIP-48499N.
STRINGi197221.tll0444.

Structurei

Secondary structure

1272
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details
Feature keyPosition(s)DescriptionActionsGraphical viewLength
Helixi33 – 36Combined sources4
Turni37 – 39Combined sources3
Helixi41 – 43Combined sources3
Beta strandi60 – 62Combined sources3
Beta strandi64 – 79Combined sources16
Beta strandi84 – 86Combined sources3
Beta strandi91 – 93Combined sources3
Beta strandi95 – 98Combined sources4
Beta strandi104 – 113Combined sources10
Beta strandi119 – 127Combined sources9
Beta strandi129 – 135Combined sources7
Turni136 – 138Combined sources3
Beta strandi141 – 147Combined sources7
Beta strandi152 – 154Combined sources3
Beta strandi160 – 162Combined sources3
Beta strandi167 – 175Combined sources9
Beta strandi190 – 196Combined sources7
Helixi206 – 208Combined sources3
Helixi209 – 212Combined sources4
Beta strandi218 – 231Combined sources14
Turni232 – 235Combined sources4
Beta strandi236 – 246Combined sources11
Turni250 – 253Combined sources4
Beta strandi258 – 271Combined sources14

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1S5LX-ray3.50O/o27-272[»]
2AXTX-ray3.00O/o26-272[»]
3KZIX-ray3.60O27-272[»]
4FBYX-ray6.56O/f27-272[»]
4IXQX-ray5.70O/o1-272[»]
4IXRX-ray5.90O/o1-272[»]
4PBUX-ray5.00O/o30-272[»]
4PJ0X-ray2.44O/o1-272[»]
4RVYX-ray5.50O/o30-272[»]
4TNHX-ray4.90O/o1-272[»]
4TNIX-ray4.60O/o1-272[»]
4TNJX-ray4.50O/o1-272[»]
4TNKX-ray5.20O/o1-272[»]
4V62X-ray2.90AO/BO26-272[»]
4V82X-ray3.20AO/BO26-272[»]
5E7CX-ray4.50O/o30-272[»]
ProteinModelPortaliP0A431.
SMRiP0A431.
ModBaseiSearch...
MobiDBiSearch...

Miscellaneous databases

EvolutionaryTraceiP0A431.

Family & Domainsi

Sequence similaritiesi

Belongs to the PsbO family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

eggNOGiENOG4105CPJ. Bacteria.
ENOG410XP4G. LUCA.
HOGENOMiHOG000232492.
KOiK02716.
OMAiFQPITVL.
OrthoDBiPOG091H13MG.

Family and domain databases

InterProiIPR011250. OMP/PagP_b-brl.
IPR002628. PSII_MSP.
[Graphical view]
PfamiPF01716. MSP. 1 hit.
[Graphical view]
SUPFAMiSSF56925. SSF56925. 1 hit.

Sequencei

Sequence statusi: Complete.

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

P0A431-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKYRILMATL LAVCLGIFSL SAPAFAAKQT LTYDDIVGTG LANKCPTLDD
60 70 80 90 100
TARGAYPIDS SQTYRIARLC LQPTTFLVKE EPKNKRQEAE FVPTKLVTRE
110 120 130 140 150
TTSLDQIQGE LKVNSDGSLT FVEEDGIDFQ PVTVQMAGGE RIPLLFTVKN
160 170 180 190 200
LVASTQPNVT SITTSTDFKG EFNVPSYRTA NFLDPKGRGL ASGYDSAIAL
210 220 230 240 250
PQAKEEELAR ANVKRFSLTK GQISLNVAKV DGRTGEIAGT FESEQLSDDD
260 270
MGAHEPHEVK IQGVFYASIE PA
Length:272
Mass (Da):29,608
Last modified:March 15, 2005 - v1
Checksum:i1F053A3453990141
GO

Mass spectrometryi

Molecular mass is 26830±30 Da from positions 27 - 272. Determined by MALDI. 1 Publication
Molecular mass is 26820 Da from positions 27 - 272. Determined by MALDI. 1 Publication

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000039 Genomic DNA. Translation: BAC07996.1.
RefSeqiNP_681234.1. NC_004113.1.
WP_011056297.1. NC_004113.1.

Genome annotation databases

EnsemblBacteriaiBAC07996; BAC07996; BAC07996.
GeneIDi1012686.
KEGGitel:tll0444.
PATRICi23926130. VBITheElo119873_0468.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BA000039 Genomic DNA. Translation: BAC07996.1.
RefSeqiNP_681234.1. NC_004113.1.
WP_011056297.1. NC_004113.1.

3D structure databases

Select the link destinations:
PDBei
RCSB PDBi
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1S5LX-ray3.50O/o27-272[»]
2AXTX-ray3.00O/o26-272[»]
3KZIX-ray3.60O27-272[»]
4FBYX-ray6.56O/f27-272[»]
4IXQX-ray5.70O/o1-272[»]
4IXRX-ray5.90O/o1-272[»]
4PBUX-ray5.00O/o30-272[»]
4PJ0X-ray2.44O/o1-272[»]
4RVYX-ray5.50O/o30-272[»]
4TNHX-ray4.90O/o1-272[»]
4TNIX-ray4.60O/o1-272[»]
4TNJX-ray4.50O/o1-272[»]
4TNKX-ray5.20O/o1-272[»]
4V62X-ray2.90AO/BO26-272[»]
4V82X-ray3.20AO/BO26-272[»]
5E7CX-ray4.50O/o30-272[»]
ProteinModelPortaliP0A431.
SMRiP0A431.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

DIPiDIP-48499N.
STRINGi197221.tll0444.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAC07996; BAC07996; BAC07996.
GeneIDi1012686.
KEGGitel:tll0444.
PATRICi23926130. VBITheElo119873_0468.

Phylogenomic databases

eggNOGiENOG4105CPJ. Bacteria.
ENOG410XP4G. LUCA.
HOGENOMiHOG000232492.
KOiK02716.
OMAiFQPITVL.
OrthoDBiPOG091H13MG.

Miscellaneous databases

EvolutionaryTraceiP0A431.

Family and domain databases

InterProiIPR011250. OMP/PagP_b-brl.
IPR002628. PSII_MSP.
[Graphical view]
PfamiPF01716. MSP. 1 hit.
[Graphical view]
SUPFAMiSSF56925. SSF56925. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiPSBO_THEEB
AccessioniPrimary (citable) accession number: P0A431
Secondary accession number(s): P55221, Q54074
Entry historyi
Integrated into UniProtKB/Swiss-Prot: March 15, 2005
Last sequence update: March 15, 2005
Last modified: November 2, 2016
This is version 82 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.