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A0T0T0 (PSBD_THAPS) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 49. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Photosystem II D2 protein

Short name=PSII D2 protein
EC=1.10.3.9
Alternative name(s):
Photosystem Q(A) protein
Gene names
Name:psbD
Encoded onPlastid; Chloroplast
OrganismThalassiosira pseudonana (Marine diatom) (Cyclotella nana) [Reference proteome]
Taxonomic identifier35128 [NCBI]
Taxonomic lineageEukaryotaStramenopilesBacillariophytaCoscinodiscophyceaeThalassiosirophycidaeThalassiosiralesThalassiosiraceaeThalassiosira

Protein attributes

Sequence length351 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

One of the two reaction center proteins of photosystem II (PSII), D2 is needed for assembly of a stable PSII complex By similarity. HAMAP-Rule MF_01383

Catalytic activity

2 H2O + 2 plastoquinone + 4 light = O2 + 2 plastoquinol. HAMAP-Rule MF_01383

Cofactor

The psbA/B heterodimer shares a non-heme iron and each subunit also binds two chlorophylls and pheophytin By similarity.

Subunit structure

The psbA/B heterodimer binds the P680 chlorophylls and subsequent electron acceptors. PSII consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. PSII forms dimeric complexes By similarity.

Subcellular location

Plastidchloroplast thylakoid membrane; Multi-pass membrane protein By similarity HAMAP-Rule MF_01383.

Miscellaneous

The peripheral chlorophyll-a D2 molecule has been identified as the spectroscopic species ChlzD2 By similarity.

Sequence similarities

Belongs to the reaction center PufL/M/PsbA/D family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 351351Photosystem II D2 protein HAMAP-Rule MF_01383
PRO_0000359709

Regions

Transmembrane34 – 5421Helical; Potential
Transmembrane107 – 12721Helical; Potential
Transmembrane140 – 16223Helical; Potential
Transmembrane190 – 21627Helical; Potential
Transmembrane264 – 28421Helical; Potential

Sites

Metal binding1161Magnesium (chlorophyll-a D2, axial ligand; peripheral) By similarity
Metal binding2131Iron; shared with heterodimeric partner By similarity
Metal binding2671Iron; shared with heterodimeric partner By similarity
Binding site2131Plastoquinone QA By similarity
Binding site2601Plastoquinone QA; via amide nitrogen By similarity

Sequences

Sequence LengthMass (Da)Tools
A0T0T0 [UniParc].

Last modified January 9, 2007. Version 1.
Checksum: 3A0912BE20853FB4

FASTA35139,064
        10         20         30         40         50         60 
MTIAIGQNQE RGLFDLVDDW LKRDRFVFVG WSGILLFPTA YLAAGGWFTG TTFVTSWYTH 

        70         80         90        100        110        120 
GLASSYLEGC NFLTAAVSTP ANSMGHSLLL LWGPEAQGDF TRWCQIGGLW AFIALHGAFG 

       130        140        150        160        170        180 
LIGFCLRQFE IARLVGIRPY NAIAFSGPIA VFVSVFLLYP LGQASWFFAP SFGVAAIFRF 

       190        200        210        220        230        240 
LLFLQGFHNW TLNPFHMMGV AGILGGALLC AIHGATVENT LFEDGDAANT FRAFTPTQSE 

       250        260        270        280        290        300 
ETYSMVTANR FWSQIFGVAF SNKRWLHFFM LFVPVAGLWT SSIGIVGLAL NLRAYDFVSQ 

       310        320        330        340        350 
ELRAAEDPEF ETFYTKNILL NEGIRSWMAA QDQPHENFVF PEEVLPRGNA L 

« Hide

References

[1]"Chloroplast genomes of the diatoms Phaeodactylum tricornutum and Thalassiosira pseudonana: comparison with other plastid genomes of the red lineage."
Oudot-Le Secq M.-P., Grimwood J., Shapiro H., Armbrust E.V., Bowler C., Green B.R.
Mol. Genet. Genomics 277:427-439(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: CCMP1335.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
EF067921 Genomic DNA. Translation: ABK20765.1.
RefSeqYP_874542.1. NC_008589.1.

3D structure databases

ProteinModelPortalA0T0T0.
SMRA0T0T0. Positions 1-349.
ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID4524785.

Phylogenomic databases

ProtClustDBCHL00004.

Family and domain databases

Gene3D1.20.85.10. 2 hits.
HAMAPMF_01383. PSII_PsbD_D2.
InterProIPR000484. Photo_RC_L/M.
IPR005868. PSII_PsbD/D2.
[Graphical view]
PfamPF00124. Photo_RC. 1 hit.
[Graphical view]
PRINTSPR00256. REACTNCENTRE.
SUPFAMSSF81483. SSF81483. 1 hit.
TIGRFAMsTIGR01152. psbD. 1 hit.
PROSITEPS00244. REACTION_CENTER. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSBD_THAPS
AccessionPrimary (citable) accession number: A0T0T0
Entry history
Integrated into UniProtKB/Swiss-Prot: January 20, 2009
Last sequence update: January 9, 2007
Last modified: February 19, 2014
This is version 49 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)

Relevant documents

SIMILARITY comments

Index of protein domains and families