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A2T309

- PSBA_ANGEV

UniProt

A2T309 - PSBA_ANGEV

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Protein
Photosystem Q(B) protein
Gene
psbA
Organism
Angiopteris evecta (Mule's foot fern) (Polypodium evectum)
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

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

Names & Taxonomyi

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:psbA
Encoded oniPlastid; Chloroplast
OrganismiAngiopteris evecta (Mule's foot fern) (Polypodium evectum)
Taxonomic identifieri13825 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaMoniliformopsesMarattiopsidaMarattialesMarattiaceaeAngiopteris

Subcellular locationi

Topology

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

Keywords - Cellular componenti

Chloroplast, Membrane, Photosystem II, Plastid, Thylakoid

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 344344Photosystem Q(B) proteinUniRule annotation
PRO_0000339946Add
BLAST
Propeptidei345 – 3539 Reviewed prediction
PRO_0000339947

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei2 – 21N-acetylthreonine By similarity
Modified residuei2 – 21Phosphothreonine By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

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.

Structurei

3D structure databases

ProteinModelPortaliA2T309.
SMRiA2T309. Positions 10-344.

Family & Domainsi

Sequence similaritiesi

Keywords - Domaini

Transmembrane, Transmembrane helix

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.

A2T309-1 [UniParc]FASTAAdd to Basket

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MTASLERRES ASLWGRFCDW ITSTENRLYI GWFGVLMIPT LLTATSVFII    50
AFIAAPPVDI DGIREPVSGS LLYGNNIISG AIIPTSAAIG LHFYPIWEAA 100
SVDEWLYNGG PYELIVLHFL LGVACYMGRE WELSFRLGMR PWIAVAYSAP 150
VAAAAAVFLI YPIGQGSFSD GMPLGISGTF NFMIVFQAEH NILMHPFHML 200
GVAGVFGGSL FSAMHGSLVT SSLIRETTEN ESANAGYKFG QEEETYNIVA 250
AHGYFGRLIF QYASFNNSRS LHFFLAAWPV VGIWFTALGI STMAFNLNGF 300
NFNQSVVDSQ GRVINTWADI INRANLGMEV MHERNAHNFP LDLASVEAPS 350
VKA 353
Length:353
Mass (Da):38,779
Last modified:March 6, 2007 - v1
Checksum:iA547FCEB3FC4F28C
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
DQ821119 Genomic DNA. Translation: ABG79576.1.
RefSeqiYP_001023677.1. NC_008829.1.

Genome annotation databases

GeneIDi4788204.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
DQ821119 Genomic DNA. Translation: ABG79576.1 .
RefSeqi YP_001023677.1. NC_008829.1.

3D structure databases

ProteinModelPortali A2T309.
SMRi A2T309. Positions 10-344.
ModBasei Search...
MobiDBi Search...

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

GeneIDi 4788204.

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. "The complete plastid genome sequence of Angiopteris evecta (G. Forst.) Hoffm. (Marattiaceae)."
    Roper J.M., Hansen S.K., Wolf P.G., Karol K.G., Mandoli D.F., Everett K.D.E., Kuehl J.V., Boore J.L.
    Am. Fern J. 97:95-106(2007)
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Entry informationi

Entry nameiPSBA_ANGEV
AccessioniPrimary (citable) accession number: A2T309
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 10, 2008
Last sequence update: March 6, 2007
Last modified: May 14, 2014
This is version 44 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Miscellaneous

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

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

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