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P10793

- PSAC_PEA

UniProt

P10793 - PSAC_PEA

Protein

Photosystem I iron-sulfur center

Gene

psaC

Organism
Pisum sativum (Garden pea)
Status
Reviewed - Annotation score: 4 out of 5- Experimental evidence at protein leveli
  1. Functioni

    Apoprotein for the two 4Fe-4S centers FA and FB of photosystem I (PSI); essential for photochemical activity. FB is the terminal electron acceptor of PSI, donating electrons to ferredoxin. The C-terminus interacts with PsaA/B/D and helps assemble the protein into the PSI complex. Required for binding of PsaD and PsaE to PSI. 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.UniRule annotation

    Catalytic activityi

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

    Cofactori

    Binds 2 4Fe-4S clusters. Cluster 2 is most probably the spectroscopically characterized electron acceptor FA and cluster 1 is most probably FB.UniRule annotation

    Sites

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Metal bindingi11 – 111Iron-sulfur 1 (4Fe-4S)UniRule annotation
    Metal bindingi14 – 141Iron-sulfur 1 (4Fe-4S)UniRule annotation
    Metal bindingi17 – 171Iron-sulfur 1 (4Fe-4S)UniRule annotation
    Metal bindingi21 – 211Iron-sulfur 2 (4Fe-4S)UniRule annotation
    Metal bindingi48 – 481Iron-sulfur 2 (4Fe-4S)UniRule annotation
    Metal bindingi51 – 511Iron-sulfur 2 (4Fe-4S)UniRule annotation
    Metal bindingi54 – 541Iron-sulfur 2 (4Fe-4S)UniRule annotation
    Metal bindingi58 – 581Iron-sulfur 1 (4Fe-4S)UniRule annotation

    GO - Molecular functioni

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

    GO - Biological processi

    1. photosynthetic electron transport in photosystem I Source: InterPro

    Keywords - Molecular functioni

    Oxidoreductase

    Keywords - Biological processi

    Electron transport, Photosynthesis, Transport

    Keywords - Ligandi

    4Fe-4S, Iron, Iron-sulfur, Metal-binding

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    Photosystem I iron-sulfur centerUniRule annotation (EC:1.97.1.12UniRule annotation)
    Alternative name(s):
    9 kDa polypeptideUniRule annotation
    PSI-CUniRule annotation
    Photosystem I subunit VIIUniRule annotation
    PsaCUniRule annotation
    Gene namesi
    Name:psaCUniRule annotation
    Synonyms:frxA
    Encoded oniPlastid; Chloroplast
    OrganismiPisum sativum (Garden pea)
    Taxonomic identifieri3888 [NCBI]
    Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsfabidsFabalesFabaceaePapilionoideaeFabeaePisum

    Subcellular locationi

    Plastidchloroplast thylakoid membrane UniRule annotation; Peripheral membrane protein UniRule annotation; Stromal side UniRule annotation

    GO - Cellular componenti

    1. chloroplast thylakoid membrane Source: UniProtKB-SubCell
    2. photosystem I Source: UniProtKB-KW

    Keywords - Cellular componenti

    Chloroplast, Membrane, Photosystem I, Plastid, Thylakoid

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Initiator methioninei1 – 11Removed1 Publication
    Chaini2 – 8180Photosystem I iron-sulfur centerPRO_0000061996Add
    BLAST

    Interactioni

    Subunit structurei

    The eukaryotic PSI reaction center is composed of at least 11 subunits.UniRule annotation

    Protein-protein interaction databases

    DIPiDIP-60283N.

    Structurei

    Secondary structure

    1
    81
    Legend: HelixTurnBeta strand
    Show more details
    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Beta strandi15 – 173
    Turni22 – 243
    Turni35 – 373
    Turni54 – 563
    Helixi75 – 773

    3D structure databases

    Select the link destinations:
    PDBe
    RCSB PDB
    PDBj
    Links Updated
    EntryMethodResolution (Å)ChainPositionsPDBsum
    1YO9model-C2-81[»]
    2O01X-ray3.40C2-81[»]
    2WSCX-ray3.30C1-81[»]
    2WSEX-ray3.49C1-81[»]
    2WSFX-ray3.48C1-81[»]
    3LW5X-ray3.30C1-81[»]
    ProteinModelPortaliP10793.
    SMRiP10793. Positions 2-81.
    ModBaseiSearch...
    MobiDBiSearch...

    Miscellaneous databases

    EvolutionaryTraceiP10793.

    Family & Domainsi

    Domains and Repeats

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Domaini2 – 31304Fe-4S ferredoxin-type 1UniRule annotationAdd
    BLAST
    Domaini39 – 68304Fe-4S ferredoxin-type 2UniRule annotationAdd
    BLAST

    Sequence similaritiesi

    Contains 2 4Fe-4S ferredoxin-type domains.UniRule annotation

    Keywords - Domaini

    Repeat

    Family and domain databases

    HAMAPiMF_01303. PSI_PsaC.
    InterProiIPR017896. 4Fe4S_Fe-S-bd.
    IPR017900. 4Fe4S_Fe_S_CS.
    IPR017491. PSI_PsaC.
    [Graphical view]
    TIGRFAMsiTIGR03048. PS_I_psaC. 1 hit.
    PROSITEiPS00198. 4FE4S_FER_1. 2 hits.
    PS51379. 4FE4S_FER_2. 2 hits.
    [Graphical view]

    Sequencei

    Sequence statusi: Complete.

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

    P10793-1 [UniParc]FASTAAdd to Basket

    « Hide

    MSHSVKIYDT CIGCTQCVRA CPTDVLEMIP WGGCKAKQIA SAPRTEDCVG   50
    CKRCESACPT DFLSVRVYLW HETTRSMGLA Y 81
    Length:81
    Mass (Da):8,980
    Last modified:January 23, 2007 - v3
    Checksum:i680556D8CB5603BF
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    X13157 Genomic DNA. Translation: CAA31554.1.
    PIRiS04033. FEPM1S.
    RefSeqiYP_003587533.1. NC_014057.1.

    Genome annotation databases

    GeneIDi9073063.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    X13157 Genomic DNA. Translation: CAA31554.1 .
    PIRi S04033. FEPM1S.
    RefSeqi YP_003587533.1. NC_014057.1.

    3D structure databases

    Select the link destinations:
    PDBe
    RCSB PDB
    PDBj
    Links Updated
    Entry Method Resolution (Å) Chain Positions PDBsum
    1YO9 model - C 2-81 [» ]
    2O01 X-ray 3.40 C 2-81 [» ]
    2WSC X-ray 3.30 C 1-81 [» ]
    2WSE X-ray 3.49 C 1-81 [» ]
    2WSF X-ray 3.48 C 1-81 [» ]
    3LW5 X-ray 3.30 C 1-81 [» ]
    ProteinModelPortali P10793.
    SMRi P10793. Positions 2-81.
    ModBasei Search...
    MobiDBi Search...

    Protein-protein interaction databases

    DIPi DIP-60283N.

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Genome annotation databases

    GeneIDi 9073063.

    Miscellaneous databases

    EvolutionaryTracei P10793.

    Family and domain databases

    HAMAPi MF_01303. PSI_PsaC.
    InterProi IPR017896. 4Fe4S_Fe-S-bd.
    IPR017900. 4Fe4S_Fe_S_CS.
    IPR017491. PSI_PsaC.
    [Graphical view ]
    TIGRFAMsi TIGR03048. PS_I_psaC. 1 hit.
    PROSITEi PS00198. 4FE4S_FER_1. 2 hits.
    PS51379. 4FE4S_FER_2. 2 hits.
    [Graphical view ]
    ProtoNeti Search...

    Publicationsi

    1. "Localization and nucleotide sequence of the gene for the 8 kDa subunit of photosystem I in pea and wheat chloroplast DNA."
      Dunn P.P.J., Gray J.C.
      Plant Mol. Biol. 11:311-319(1988)
      [AGRICOLA] [Europe PMC]
      Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
    2. "N-terminal amino acid sequence analysis of the subunits of pea photosystem I."
      Dunn P.P.J., Packman L.C., Pappin D., Gray J.C.
      FEBS Lett. 228:157-161(1988) [PubMed] [Europe PMC] [Abstract]
      Cited for: PROTEIN SEQUENCE OF 2-49.

    Entry informationi

    Entry nameiPSAC_PEA
    AccessioniPrimary (citable) accession number: P10793
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: July 1, 1989
    Last sequence update: January 23, 2007
    Last modified: October 1, 2014
    This is version 104 of the entry and version 3 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programPlant Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    3D-structure, Direct protein sequencing

    Documents

    1. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    2. SIMILARITY comments
      Index of protein domains and families

    External Data

    Dasty 3