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A2C057

- PSBA_PROM1

UniProt

A2C057 - PSBA_PROM1

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Protein
Photosystem Q(B) protein
Gene
psbA1, NATL1_03031
psbA2, NATL1_13251
psbA3, NATL1_15721
Organism
Prochlorococcus marinus (strain NATL1A)
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 bindingi171 – 1711Calcium-manganese-oxide cluster [Ca-4Mn-5O]; calcium By similarity
Metal bindingi171 – 1711Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 1 By similarity
Metal bindingi190 – 1901Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2 By similarity
Metal bindingi216 – 2161Iron; shared with heterodimeric partner By similarity
Metal bindingi273 – 2731Iron; shared with heterodimeric partner By similarity
Metal bindingi333 – 3331Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2; via tele nitrogen By similarity
Metal bindingi334 – 3341Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 1 By similarity
Metal bindingi334 – 3341Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 3 By similarity
Metal bindingi343 – 3431Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 2 By similarity
Metal bindingi343 – 3431Calcium-manganese-oxide cluster [Ca-4Mn-5O]; manganese 4 By similarity
Sitei345 – 3462Cleavage; by CtpA By similarity
Metal bindingi345 – 3451Calcium-manganese-oxide cluster [Ca-4Mn-5O]; calcium; via carboxylate By similarity
Metal bindingi345 – 3451Calcium-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

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

BioCyciPMAR167555:GI3K-1351-MONOMER.
PMAR167555:GI3K-1603-MONOMER.
PMAR167555:GI3K-307-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:NATL1_03031
AND
Name:psbA2
Ordered Locus Names:NATL1_13251
AND
Name:psbA3
Ordered Locus Names:NATL1_15721
OrganismiProchlorococcus marinus (strain NATL1A)
Taxonomic identifieri167555 [NCBI]
Taxonomic lineageiBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus
ProteomesiUP000002592: Chromosome
Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Transmembranei37 – 5721Helical; Reviewed prediction
Add
BLAST
Transmembranei110 – 13021Helical; Reviewed prediction
Add
BLAST
Transmembranei142 – 16524Helical; Reviewed prediction
Add
BLAST
Transmembranei193 – 21927Helical; Reviewed prediction
Add
BLAST
Transmembranei270 – 29021Helical; 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 – 345345Photosystem Q(B) proteinUniRule annotation
PRO_0000316367Add
BLAST
Propeptidei346 – 36015 Reviewed prediction
PRO_0000316368Add
BLAST

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

STRINGi167555.NATL1_15721.

Structurei

3D structure databases

ProteinModelPortaliA2C057.
SMRiA2C057. Positions 15-345.

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.

A2C057-1 [UniParc]FASTAAdd to Basket

« Hide

MTTIQQQRSS LLKGWPQFCE WVTSTNNRIY VGWFGVLMIP CLLAATTCFI    50
VAFIAAPPVD IDGIREPVAG SFMYGNNIIS GAVVPSSNAI GLHFYPIWEA 100
ATLDEWLYNG GPYQLVIFHF LIGISAYMGR QWELSYRLGM RPWICVAYSA 150
PVSAAFAVFL VYPFGQGSFS DGMPLGISGT FNFMFVFQAE HNILMHPFHM 200
AGVAGMFGGA LFSAMHGSLV TSSLIRETTG LDSQNYGYKF GQEEETYNIV 250
AAHGYFGRLI FQYASFNNSR SLHFFLASWP VICVWLTSMG ICTMAFNLNG 300
FNFNQSVVDT SGKVVPTWGD VLNRANLGME VMHERNAHNF PLDLAAAEST 350
SVALVAPAIG 360
Length:360
Mass (Da):39,638
Last modified:February 20, 2007 - v1
Checksum:i536BE7C71DF4D18E
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP000553 Genomic DNA. Translation: ABM74867.1.
CP000553 Genomic DNA. Translation: ABM75883.1.
CP000553 Genomic DNA. Translation: ABM76129.1.
RefSeqiWP_011294225.1. NC_008819.1.
YP_001014132.1. NC_008819.1.
YP_001015148.1. NC_008819.1.
YP_001015394.1. NC_008819.1.

Genome annotation databases

EnsemblBacteriaiABM74867; ABM74867; NATL1_03031.
ABM75883; ABM75883; NATL1_13251.
ABM76129; ABM76129; NATL1_15721.
GeneIDi4779810.
4780138.
4780207.
KEGGipme:NATL1_03031.
pme:NATL1_13251.
pme:NATL1_15721.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
CP000553 Genomic DNA. Translation: ABM74867.1 .
CP000553 Genomic DNA. Translation: ABM75883.1 .
CP000553 Genomic DNA. Translation: ABM76129.1 .
RefSeqi WP_011294225.1. NC_008819.1.
YP_001014132.1. NC_008819.1.
YP_001015148.1. NC_008819.1.
YP_001015394.1. NC_008819.1.

3D structure databases

ProteinModelPortali A2C057.
SMRi A2C057. Positions 15-345.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 167555.NATL1_15721.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai ABM74867 ; ABM74867 ; NATL1_03031 .
ABM75883 ; ABM75883 ; NATL1_13251 .
ABM76129 ; ABM76129 ; NATL1_15721 .
GeneIDi 4779810.
4780138.
4780207.
KEGGi pme:NATL1_03031.
pme:NATL1_13251.
pme:NATL1_15721.

Phylogenomic databases

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

Enzyme and pathway databases

BioCyci PMAR167555:GI3K-1351-MONOMER.
PMAR167555:GI3K-1603-MONOMER.
PMAR167555:GI3K-307-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: NATL1A.

Entry informationi

Entry nameiPSBA_PROM1
AccessioniPrimary (citable) accession number: A2C057
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 5, 2008
Last sequence update: February 20, 2007
Last modified: September 3, 2014
This is version 60 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