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B0JIS8 (PSBA_MICAN) Reviewed, UniProtKB/Swiss-Prot

Last modified May 14, 2014. Version 43. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Photosystem Q(B) protein

EC=1.10.3.9
Alternative name(s):
32 kDa thylakoid membrane protein
Photosystem II protein D1
Gene names
Name:psbA1
Ordered Locus Names:MAE_10220
AND
Name:psbA2
Ordered Locus Names:MAE_10380
AND
Name:psbA3
Ordered Locus Names:MAE_10510
AND
Name:psbA4
Ordered Locus Names:MAE_10800
AND
Name:psbA5
Ordered Locus Names:MAE_58140
OrganismMicrocystis aeruginosa (strain NIES-843) [Complete proteome] [HAMAP]
Taxonomic identifier449447 [NCBI]
Taxonomic lineageBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesMicrocystis

Protein attributes

Sequence length360 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceInferred from homology

General annotation (Comments)

Function

This is one of the two reaction center proteins of photosystem II By similarity. HAMAP-Rule MF_01379

Catalytic activity

2 H2O + 2 plastoquinone + 4 light = O2 + 2 plastoquinol. HAMAP-Rule MF_01379

Cofactor

The PsbA/B heterodimer binds P680, the primary electron donor of PSII. It shares a non-heme iron and each subunit binds additional chlorophylls and pheophytin. PsbA provides most of the ligands for the Mn-cluster of the oxygen-evolving complex 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

Cellular thylakoid membrane; Multi-pass membrane protein By similarity HAMAP-Rule MF_01379.

Miscellaneous

Herbicides such as atrazine, BNT, diuron or ioxynil bind to Q(B) and block electron transport By similarity.

Cyanobacteria usually contain more than 2 copies of the psbA gene.

Sequence similarities

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

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 344344Photosystem Q(B) protein HAMAP-Rule MF_01379
PRO_0000339926
Propeptide345 – 36016 Potential
PRO_0000339927

Regions

Transmembrane36 – 5621Helical; Potential
Transmembrane109 – 12921Helical; Potential
Transmembrane141 – 16424Helical; Potential
Transmembrane192 – 21827Helical; Potential
Transmembrane269 – 28921Helical; Potential

Sites

Metal binding1701Calcium-manganese-oxide cluster [Ca-4Mn-5O]; calcium By similarity
Metal binding1701Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 1 By similarity
Metal binding1891Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2 By similarity
Metal binding2151Iron; shared with heterodimeric partner By similarity
Metal binding2721Iron; shared with heterodimeric partner By similarity
Metal binding3321Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2; via tele nitrogen By similarity
Metal binding3331Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 1 By similarity
Metal binding3331Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 3 By similarity
Metal binding3421Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2 By similarity
Metal binding3421Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 4 By similarity
Metal binding3441Calcium-manganese-oxide cluster [Ca-4Mn-5O]; calcium; via carboxylate By similarity
Metal binding3441Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 4; via carboxylate By similarity
Site344 – 3452Cleavage; by CtpA By similarity

Sequences

Sequence LengthMass (Da)Tools
B0JIS8 [UniParc].

Last modified March 18, 2008. Version 1.
Checksum: 68BDBFFC518BA80B

FASTA36039,715
        10         20         30         40         50         60 
MTTTLQQRES ASLWEQFCQW ITSTNNRLYI GWFGVIMIPT LLTATTCFII AFIAAPPVDI 

        70         80         90        100        110        120 
DGIREPVAGS LLYGNNIISG AVVPSSNAIG LHFYPIWEAA SLDEWLYNGG PYQLVIFHFL 

       130        140        150        160        170        180 
LGVFCYLGRQ WELSFRLGMR PWICVAYSAP VSAATAVFLI YPIGQGSFSD GMPLGISGTF 

       190        200        210        220        230        240 
NFMFVFQAEH NILMHPFHML GVAGVFGGSL FSAMHGSLVT SSLVRETTEI ESQNYGYKFG 

       250        260        270        280        290        300 
QEEETYNIVA AHGYFGRLIF QYASFNNSRS LHFFLGAWPV IGIWFTAMGV STMAFNLNGF 

       310        320        330        340        350        360 
NFNQSILDSQ GRVIGTWADV LNRAGIGMEV MHERNAHNFP LDLASGEQAP VALIAPAING 

« Hide

References

[1]"Complete genomic structure of the bloom-forming toxic cyanobacterium Microcystis aeruginosa NIES-843."
Kaneko T., Nakajima N., Okamoto S., Suzuki I., Tanabe Y., Tamaoki M., Nakamura Y., Kasai F., Watanabe A., Kawashima K., Kishida Y., Ono A., Shimizu Y., Takahashi C., Minami C., Fujishiro T., Kohara M., Katoh M. expand/collapse author list , Nakazaki N., Nakayama S., Yamada M., Tabata S., Watanabe M.M.
DNA Res. 14:247-256(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: NIES-843.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AP009552 Genomic DNA. Translation: BAG00844.1.
AP009552 Genomic DNA. Translation: BAG00860.1.
AP009552 Genomic DNA. Translation: BAG00873.1.
AP009552 Genomic DNA. Translation: BAG00902.1.
AP009552 Genomic DNA. Translation: BAG05636.1.
RefSeqYP_001656036.1. NC_010296.1.
YP_001656052.1. NC_010296.1.
YP_001656065.1. NC_010296.1.
YP_001656094.1. NC_010296.1.
YP_001660828.1. NC_010296.1.

3D structure databases

ProteinModelPortalB0JIS8.
SMRB0JIS8. Positions 10-344.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING449447.MAE_58140.

Proteomic databases

PaxDbB0JIS8.
PRIDEB0JIS8.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaBAG00844; BAG00844; MAE_10220.
BAG00860; BAG00860; MAE_10380.
BAG00873; BAG00873; MAE_10510.
BAG00902; BAG00902; MAE_10800.
BAG05636; BAG05636; MAE_58140.
GeneID5861820.
5861836.
5861849.
5861878.
5866658.
KEGGmar:MAE_10220.
mar:MAE_10380.
mar:MAE_10510.
mar:MAE_10800.
mar:MAE_58140.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGNOG04871.
HOGENOMHOG000246913.
KOK02703.
OMACFTIAFI.
OrthoDBEOG6Q2SGP.

Enzyme and pathway databases

BioCycMAER449447:GHO8-1024-MONOMER.
MAER449447:GHO8-1040-MONOMER.
MAER449447:GHO8-1053-MONOMER.
MAER449447:GHO8-1082-MONOMER.
MAER449447:GHO8-5862-MONOMER.

Family and domain databases

Gene3D1.20.85.10. 1 hit.
HAMAPMF_01379. PSII_PsbA_D1.
InterProIPR000484. Photo_RC_L/M.
IPR005867. PSII_D1.
[Graphical view]
PfamPF00124. Photo_RC. 1 hit.
[Graphical view]
PRINTSPR00256. REACTNCENTRE.
SUPFAMSSF81483. SSF81483. 1 hit.
TIGRFAMsTIGR01151. psbA. 1 hit.
PROSITEPS00244. REACTION_CENTER. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePSBA_MICAN
AccessionPrimary (citable) accession number: B0JIS8
Entry history
Integrated into UniProtKB/Swiss-Prot: June 10, 2008
Last sequence update: March 18, 2008
Last modified: May 14, 2014
This is version 43 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families