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A1EA08

- PSAA_AGRST

UniProt

A1EA08 - PSAA_AGRST

Protein

Photosystem I P700 chlorophyll a apoprotein A1

Gene

psaA

Organism
Agrostis stolonifera (Creeping bentgrass)
Status
Reviewed - Annotation score: 4 out of 5- Protein inferred from homologyi
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    • History
      Entry version 38 (01 Oct 2014)
      Sequence version 1 (23 Jan 2007)
      Previous versions | rss
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    Functioni

    PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin.

    Catalytic activityi

    Reduced plastocyanin + oxidized ferredoxin + light = oxidized plastocyanin + reduced ferredoxin.UniRule annotation

    Cofactori

    P700 is a chlorophyll a/chlorophyll a' dimer, A0 is one or more chlorophyll a, A1 is one or both phylloquinones and FX is a shared 4Fe-4S iron-sulfur center.UniRule annotation

    Sites

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Metal bindingi573 – 5731Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
    Metal bindingi582 – 5821Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
    Metal bindingi675 – 6751Magnesium (chlorophyll-a' A1 axial ligand; P700 special pair)UniRule annotation
    Metal bindingi683 – 6831Magnesium (chlorophyll-a A3 axial ligand)UniRule annotation
    Binding sitei691 – 6911Chlorophyll-a A3UniRule annotation
    Binding sitei692 – 6921Phylloquinone AUniRule annotation

    GO - Molecular functioni

    1. 4 iron, 4 sulfur cluster binding Source: UniProtKB-KW
    2. chlorophyll binding Source: UniProtKB-KW
    3. electron carrier activity Source: UniProtKB-HAMAP
    4. magnesium ion binding Source: UniProtKB-HAMAP
    5. oxidoreductase activity Source: UniProtKB-KW

    GO - Biological processi

    1. photosynthesis Source: UniProtKB-HAMAP
    2. protein-chromophore linkage Source: UniProtKB-KW

    Keywords - Molecular functioni

    Oxidoreductase

    Keywords - Biological processi

    Electron transport, Photosynthesis, Transport

    Keywords - Ligandi

    4Fe-4S, Chlorophyll, Chromophore, Iron, Iron-sulfur, Magnesium, Metal-binding

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    Photosystem I P700 chlorophyll a apoprotein A1UniRule annotation (EC:1.97.1.12UniRule annotation)
    Alternative name(s):
    PSI-AUniRule annotation
    PsaAUniRule annotation
    Gene namesi
    Name:psaAUniRule annotation
    Encoded oniPlastid; Chloroplast
    OrganismiAgrostis stolonifera (Creeping bentgrass)
    Taxonomic identifieri63632 [NCBI]
    Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBEP cladePooideaePoeaeAgrostidinaeAgrostis

    Organism-specific databases

    GrameneiA1EA08.

    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 I Source: UniProtKB-KW

    Keywords - Cellular componenti

    Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Chaini1 – 750750Photosystem I P700 chlorophyll a apoprotein A1PRO_0000275936Add
    BLAST

    Interactioni

    Subunit structurei

    The PsaA/B heterodimer binds the P700 chlorophyll special pair and subsequent electron acceptors. PSI consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation. The eukaryotic PSI reaction center is composed of at least 11 subunits.UniRule annotation

    Structurei

    3D structure databases

    ProteinModelPortaliA1EA08.
    SMRiA1EA08. Positions 23-750.
    ModBaseiSearch...
    MobiDBiSearch...

    Transmembrane

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Transmembranei70 – 9324Helical; Name=IUniRule annotationAdd
    BLAST
    Transmembranei156 – 17924Helical; Name=IIUniRule annotationAdd
    BLAST
    Transmembranei195 – 21925Helical; Name=IIIUniRule annotationAdd
    BLAST
    Transmembranei291 – 30919Helical; Name=IVUniRule annotationAdd
    BLAST
    Transmembranei346 – 36924Helical; Name=VUniRule annotationAdd
    BLAST
    Transmembranei385 – 41127Helical; Name=VIUniRule annotationAdd
    BLAST
    Transmembranei433 – 45523Helical; Name=VIIUniRule annotationAdd
    BLAST
    Transmembranei531 – 54919Helical; Name=VIIIUniRule annotationAdd
    BLAST
    Transmembranei589 – 61022Helical; Name=IXUniRule annotationAdd
    BLAST
    Transmembranei664 – 68623Helical; Name=XUniRule annotationAdd
    BLAST
    Transmembranei724 – 74421Helical; Name=XIUniRule annotationAdd
    BLAST

    Family & Domainsi

    Sequence similaritiesi

    Belongs to the PsaA/PsaB family.UniRule annotation

    Keywords - Domaini

    Transmembrane, Transmembrane helix

    Family and domain databases

    Gene3Di1.20.1130.10. 1 hit.
    HAMAPiMF_00458. PSI_PsaA.
    InterProiIPR006243. PSI_PsaA.
    IPR001280. PSI_PsaA/B.
    IPR020586. PSI_PsaA/B_CS.
    [Graphical view]
    PfamiPF00223. PsaA_PsaB. 1 hit.
    [Graphical view]
    PIRSFiPIRSF002905. PSI_A. 1 hit.
    PRINTSiPR00257. PHOTSYSPSAAB.
    SUPFAMiSSF81558. SSF81558. 1 hit.
    TIGRFAMsiTIGR01335. psaA. 1 hit.
    PROSITEiPS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
    [Graphical view]

    Sequencei

    Sequence statusi: Complete.

    A1EA08-1 [UniParc]FASTAAdd to Basket

    « Hide

    MIIRSPEPEV KIVVDRDPVK TSFEEWARPG HFSRTLAKGP DTTTWIWNLH    50
    ADAHDFDSHT GDLEEISRKV FSAHFGQLSI IFLWLSGMYF HGARFSNYEA 100
    WLSDPTHIGP SAQVVWPIVG QEILNGDVGG GFRGIQITSG FFQLWRASGI 150
    TSELQLYCTA IGALIFAALM LFAGWFHYHK AAPKLAWFQD VESMLNHHLA 200
    GLLGLGSLSW AGHQIHVSLP INQFLDAGVD PKEIPLPHEF ILNRDLLAQL 250
    YPSFAEGATP FFTLNWSKYA EFLTFRGGLD PVTGGLWLTD IAHHHLAIAI 300
    LFLIAGHMYR TNWGIGHGLK DILEAHKGPF TGQGHKGLYE ILTTSWHAQL 350
    SLNLAMLGST TIVVAHHMYA MPPYPYLATD YGTQLSLFTH HMWIGGFLIV 400
    GAAAHAAIFM VRDYDPTTRY NDLLDRVLRH RDAIISHLNW VCIFLGFHSF 450
    GLYIHNDTMS ALGRPQDMFS DTAIQLQPIF AQWVQNIHAT APGVTAPGAT 500
    TSTSLTWGGG ELVAVGGKVA LLPIPLGTAD FLVHHIHAFT IHVTVLILLK 550
    GVLFARSSRL IPDKANLGFR FPCDGPGRGG TCQVSAWDHV FLGLFWMYNA 600
    ISVVIFHFSW KMQSDVWGTI SDQGVVTHIT GGNFAQSSIT INGWLRDFLW 650
    AQASQVIQSY GSSLSAYGLF FLGAHFVWAF SLMFLFSGRG YWQELIESIV 700
    WAHNKLKVAP ATQPRALSII QGRAVGVTHY LLGGIATTWA FFLARIIAVG 750
    Length:750
    Mass (Da):83,131
    Last modified:January 23, 2007 - v1
    Checksum:i2A5F03474859BE58
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    EF115543 Genomic DNA. Translation: ABK79580.1.
    RefSeqiYP_874736.1. NC_008591.1.

    Genome annotation databases

    GeneIDi4524932.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    EF115543 Genomic DNA. Translation: ABK79580.1 .
    RefSeqi YP_874736.1. NC_008591.1.

    3D structure databases

    ProteinModelPortali A1EA08.
    SMRi A1EA08. Positions 23-750.
    ModBasei Search...
    MobiDBi Search...

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Genome annotation databases

    GeneIDi 4524932.

    Organism-specific databases

    Gramenei A1EA08.

    Family and domain databases

    Gene3Di 1.20.1130.10. 1 hit.
    HAMAPi MF_00458. PSI_PsaA.
    InterProi IPR006243. PSI_PsaA.
    IPR001280. PSI_PsaA/B.
    IPR020586. PSI_PsaA/B_CS.
    [Graphical view ]
    Pfami PF00223. PsaA_PsaB. 1 hit.
    [Graphical view ]
    PIRSFi PIRSF002905. PSI_A. 1 hit.
    PRINTSi PR00257. PHOTSYSPSAAB.
    SUPFAMi SSF81558. SSF81558. 1 hit.
    TIGRFAMsi TIGR01335. psaA. 1 hit.
    PROSITEi PS00419. PHOTOSYSTEM_I_PSAAB. 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. Penn A-4.

    Entry informationi

    Entry nameiPSAA_AGRST
    AccessioniPrimary (citable) accession number: A1EA08
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: February 6, 2007
    Last sequence update: January 23, 2007
    Last modified: October 1, 2014
    This is version 38 of the entry and version 1 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programPlant Protein Annotation Program

    Miscellaneousi

    Documents

    1. SIMILARITY comments
      Index of protein domains and families

    External Data

    Dasty 3