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B0JIS8

- PSBA_MICAN

UniProt

B0JIS8 - PSBA_MICAN

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Protein
Photosystem Q(B) protein
Gene
psbA1, MAE_10220
psbA2, MAE_10380
psbA3, MAE_10510
psbA4, MAE_10800
psbA5, MAE_58140 less..
Organism
Microcystis aeruginosa (strain NIES-843)
Status
Reviewed - Annotation score: 4 out of 5 - Protein inferred from homologyi

Functioni

This is one of the two reaction center proteins of photosystem II By similarity.UniRule annotation

Catalytic activityi

2 H2O + 2 plastoquinone + 4 light = O2 + 2 plastoquinol.UniRule annotation

Cofactori

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.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi170 – 1701Calcium-manganese-oxide cluster [Ca-4Mn-5O]; calcium By similarity
Metal bindingi170 – 1701Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 1 By similarity
Metal bindingi189 – 1891Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2 By similarity
Metal bindingi215 – 2151Iron; shared with heterodimeric partner By similarity
Metal bindingi272 – 2721Iron; shared with heterodimeric partner By similarity
Metal bindingi332 – 3321Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2; via tele nitrogen By similarity
Metal bindingi333 – 3331Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 1 By similarity
Metal bindingi333 – 3331Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 3 By similarity
Metal bindingi342 – 3421Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2 By similarity
Metal bindingi342 – 3421Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 4 By similarity
Sitei344 – 3452Cleavage; by CtpA By similarity
Metal bindingi344 – 3441Calcium-manganese-oxide cluster [Ca-4Mn-5O]; calcium; via carboxylate By similarity
Metal bindingi344 – 3441Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 4; via carboxylate By similarity

GO - Molecular functioni

  1. electron transporter, transferring electrons within the cyclic electron transport pathway of photosynthesis activity Source: InterPro
  2. iron ion binding Source: UniProtKB-HAMAP
  3. oxidoreductase activity Source: UniProtKB-KW
Complete GO annotation...

GO - Biological processi

  1. photosynthetic electron transport in photosystem II Source: InterPro
  2. response to herbicide Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Electron transport, Herbicide resistance, Photosynthesis, Transport

Keywords - Ligandi

Calcium, Iron, Manganese, Metal-binding

Enzyme and pathway databases

BioCyciMAER449447:GHO8-1024-MONOMER.
MAER449447:GHO8-1040-MONOMER.
MAER449447:GHO8-1053-MONOMER.
MAER449447:GHO8-1082-MONOMER.
MAER449447:GHO8-5862-MONOMER.

Names & Taxonomyi

Subcellular locationi

Topology

Protein namesi
Recommended name:
Photosystem Q(B) protein (EC:1.10.3.9)
Alternative name(s):
32 kDa thylakoid membrane protein
Photosystem II protein D1
Gene namesi
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
OrganismiMicrocystis aeruginosa (strain NIES-843)
Taxonomic identifieri449447 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesMicrocystis
ProteomesiUP000001510: Chromosome
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei36 – 5621Helical; Reviewed prediction
Add
BLAST
Transmembranei109 – 12921Helical; Reviewed prediction
Add
BLAST
Transmembranei141 – 16424Helical; Reviewed prediction
Add
BLAST
Transmembranei192 – 21827Helical; Reviewed prediction
Add
BLAST
Transmembranei269 – 28921Helical; Reviewed prediction
Add
BLAST

GO - Cellular componenti

  1. integral component of membrane Source: UniProtKB-KW
  2. photosystem II Source: UniProtKB-KW
  3. thylakoid membrane Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Membrane, Photosystem II, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 344344Photosystem Q(B) proteinUniRule annotation
PRO_0000339926Add
BLAST
Propeptidei345 – 36016 Reviewed prediction
PRO_0000339927Add
BLAST

Proteomic databases

PaxDbiB0JIS8.
PRIDEiB0JIS8.

Interactioni

Subunit structurei

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.

Protein-protein interaction databases

STRINGi449447.MAE_58140.

Structurei

3D structure databases

ProteinModelPortaliB0JIS8.
SMRiB0JIS8. Positions 10-344.

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

eggNOGiNOG04871.
HOGENOMiHOG000246913.
KOiK02703.
OMAiCFTIAFI.
OrthoDBiEOG6Q2SGP.

Family and domain databases

Gene3Di1.20.85.10. 1 hit.
HAMAPiMF_01379. PSII_PsbA_D1.
InterProiIPR000484. Photo_RC_L/M.
IPR005867. PSII_D1.
[Graphical view]
PfamiPF00124. Photo_RC. 1 hit.
[Graphical view]
PRINTSiPR00256. REACTNCENTRE.
SUPFAMiSSF81483. SSF81483. 1 hit.
TIGRFAMsiTIGR01151. psbA. 1 hit.
PROSITEiPS00244. REACTION_CENTER. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

B0JIS8-1 [UniParc]FASTAAdd to Basket

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MTTTLQQRES ASLWEQFCQW ITSTNNRLYI GWFGVIMIPT LLTATTCFII    50
AFIAAPPVDI DGIREPVAGS LLYGNNIISG AVVPSSNAIG LHFYPIWEAA 100
SLDEWLYNGG PYQLVIFHFL LGVFCYLGRQ WELSFRLGMR PWICVAYSAP 150
VSAATAVFLI YPIGQGSFSD GMPLGISGTF NFMFVFQAEH NILMHPFHML 200
GVAGVFGGSL FSAMHGSLVT SSLVRETTEI ESQNYGYKFG QEEETYNIVA 250
AHGYFGRLIF QYASFNNSRS LHFFLGAWPV IGIWFTAMGV STMAFNLNGF 300
NFNQSILDSQ GRVIGTWADV LNRAGIGMEV MHERNAHNFP LDLASGEQAP 350
VALIAPAING 360
Length:360
Mass (Da):39,715
Last modified:March 18, 2008 - v1
Checksum:i68BDBFFC518BA80B
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
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.
RefSeqiWP_012264511.1. NC_010296.1.
YP_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.

Genome annotation databases

EnsemblBacteriaiBAG00844; BAG00844; MAE_10220.
BAG00860; BAG00860; MAE_10380.
BAG00873; BAG00873; MAE_10510.
BAG00902; BAG00902; MAE_10800.
BAG05636; BAG05636; MAE_58140.
GeneIDi5861820.
5861836.
5861849.
5861878.
5866658.
KEGGimar:MAE_10220.
mar:MAE_10380.
mar:MAE_10510.
mar:MAE_10800.
mar:MAE_58140.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
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 .
RefSeqi WP_012264511.1. NC_010296.1.
YP_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

ProteinModelPortali B0JIS8.
SMRi B0JIS8. Positions 10-344.
ModBasei Search...

Protein-protein interaction databases

STRINGi 449447.MAE_58140.

Proteomic databases

PaxDbi B0JIS8.
PRIDEi B0JIS8.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai BAG00844 ; BAG00844 ; MAE_10220 .
BAG00860 ; BAG00860 ; MAE_10380 .
BAG00873 ; BAG00873 ; MAE_10510 .
BAG00902 ; BAG00902 ; MAE_10800 .
BAG05636 ; BAG05636 ; MAE_58140 .
GeneIDi 5861820.
5861836.
5861849.
5861878.
5866658.
KEGGi mar:MAE_10220.
mar:MAE_10380.
mar:MAE_10510.
mar:MAE_10800.
mar:MAE_58140.

Phylogenomic databases

eggNOGi NOG04871.
HOGENOMi HOG000246913.
KOi K02703.
OMAi CFTIAFI.
OrthoDBi EOG6Q2SGP.

Enzyme and pathway databases

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

Family and domain databases

Gene3Di 1.20.85.10. 1 hit.
HAMAPi MF_01379. PSII_PsbA_D1.
InterProi IPR000484. Photo_RC_L/M.
IPR005867. PSII_D1.
[Graphical view ]
Pfami PF00124. Photo_RC. 1 hit.
[Graphical view ]
PRINTSi PR00256. REACTNCENTRE.
SUPFAMi SSF81483. SSF81483. 1 hit.
TIGRFAMsi TIGR01151. psbA. 1 hit.
PROSITEi PS00244. REACTION_CENTER. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: NIES-843.

Entry informationi

Entry nameiPSBA_MICAN
AccessioniPrimary (citable) accession number: B0JIS8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 10, 2008
Last sequence update: March 18, 2008
Last modified: September 3, 2014
This is version 44 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

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.

Keywords - Technical termi

Complete proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi