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A1E9Q4

- PSBA_SORBI

UniProt

A1E9Q4 - PSBA_SORBI

Protein

Photosystem Q(B) protein

Gene

psbA

Organism
Sorghum bicolor (Sorghum) (Sorghum vulgare)
Status
Reviewed - Annotation score: 4 out of 5- Protein inferred from homologyi
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    • History
      Entry version 55 (01 Oct 2014)
      Sequence version 1 (23 Jan 2007)
      Previous versions | rss
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    Functioni

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

    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.By similarity

    Sites

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

    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

    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) proteinUniRule annotation (EC:1.10.3.9UniRule annotation)
    Alternative name(s):
    32 kDa thylakoid membrane proteinUniRule annotation
    Photosystem II protein D1UniRule annotation
    Gene namesi
    Name:psbAUniRule annotation
    Encoded oniPlastid; Chloroplast
    OrganismiSorghum bicolor (Sorghum) (Sorghum vulgare)
    Taxonomic identifieri4558 [NCBI]
    Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaePACMAD cladePanicoideaeAndropogoneaeSorghum
    ProteomesiUP000000768: Chloroplast

    Organism-specific databases

    GrameneiA1E9Q4.

    Subcellular locationi

    Plastidchloroplast thylakoid membrane UniRule annotation; Multi-pass membrane protein UniRule annotation

    GO - Cellular componenti

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

    Keywords - Cellular componenti

    Chloroplast, Membrane, Photosystem II, Plastid, Thylakoid

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Chaini1 – 344344Photosystem Q(B) proteinPRO_0000340070Add
    BLAST
    Propeptidei345 – 3539UniRule annotationPRO_0000340071

    Amino acid modifications

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Modified residuei2 – 21N-acetylthreonineUniRule annotation
    Modified residuei2 – 21PhosphothreonineUniRule annotation

    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.By similarity

    Protein-protein interaction databases

    STRINGi4558.Sb01g038505.1.

    Structurei

    3D structure databases

    ProteinModelPortaliA1E9Q4.
    SMRiA1E9Q4. Positions 10-344.
    ModBaseiSearch...
    MobiDBiSearch...

    Transmembrane

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Transmembranei36 – 5621HelicalUniRule annotationAdd
    BLAST
    Transmembranei109 – 12921HelicalUniRule annotationAdd
    BLAST
    Transmembranei141 – 16424HelicalUniRule annotationAdd
    BLAST
    Transmembranei192 – 21827HelicalUniRule annotationAdd
    BLAST
    Transmembranei269 – 28921HelicalUniRule annotationAdd
    BLAST

    Family & Domainsi

    Sequence similaritiesi

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

    Keywords - Domaini

    Transmembrane, Transmembrane helix

    Phylogenomic databases

    eggNOGiNOG04871.
    KOiK02703.
    OMAiRSGANGW.

    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.

    A1E9Q4-1 [UniParc]FASTAAdd to Basket

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    MTAILERRES TSLWGRFCNW ITSTENRLYI GWFGVLMIPT LLTATSVFII    50
    AFIAAPPVDI DGIREPVSGS LLYGNNIISG AIIPTSAAIG LHFYPIWEAA 100
    SVDEWLYNGG PYELIVLHFL LGVACYMGRE WELSFRLGMR PWIAVAYSAP 150
    VAAATAVFLI YPIGQGSFSD GMPLGISGTF NFMIVFQAEH NILMHPFHML 200
    GVAGVFGGSL FSAMHGSLVT SSLIRETTEN ESANEGYKFG QEEETYNIVA 250
    AHGYFGRLIF QYASFNNSRS LHFFLAAWPV VGIWFTALGI STMAFNLNGF 300
    NFNQSVVDSQ GRVINTWADI INRANLGMEV MHERNAHNFP LDLAALEVPS 350
    LNG 353
    Length:353
    Mass (Da):38,935
    Last modified:January 23, 2007 - v1
    Checksum:iAA6BFB4FBFCE1C79
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    EF115542 Genomic DNA. Translation: ABK79476.1.
    RefSeqiYP_899387.1. NC_008602.1.

    Genome annotation databases

    GeneIDi4549136.
    KEGGisbi:SobiCp002.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    EF115542 Genomic DNA. Translation: ABK79476.1 .
    RefSeqi YP_899387.1. NC_008602.1.

    3D structure databases

    ProteinModelPortali A1E9Q4.
    SMRi A1E9Q4. Positions 10-344.
    ModBasei Search...
    MobiDBi Search...

    Protein-protein interaction databases

    STRINGi 4558.Sb01g038505.1.

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Genome annotation databases

    GeneIDi 4549136.
    KEGGi sbi:SobiCp002.

    Organism-specific databases

    Gramenei A1E9Q4.

    Phylogenomic databases

    eggNOGi NOG04871.
    KOi K02703.
    OMAi RSGANGW.

    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. "Complete chloroplast genome sequences of Hordeum vulgare, Sorghum bicolor and Agrostis stolonifera, and comparative analyses with other grass genomes."
      Saski C., Lee S.-B., Fjellheim S., Guda C., Jansen R.K., Luo H., Tomkins J., Rognli O.A., Daniell H., Clarke J.L.
      Theor. Appl. Genet. 115:571-590(2007) [PubMed] [Europe PMC] [Abstract]
      Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
      Strain: cv. BTx623.

    Entry informationi

    Entry nameiPSBA_SORBI
    AccessioniPrimary (citable) accession number: A1E9Q4
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: June 10, 2008
    Last sequence update: January 23, 2007
    Last modified: October 1, 2014
    This is version 55 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.UniRule annotation

    Keywords - Technical termi

    Complete proteome, Reference proteome

    Documents

    1. SIMILARITY comments
      Index of protein domains and families

    External Data

    Dasty 3