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P0A415

- PSAC_THEEB

UniProt

P0A415 - PSAC_THEEB

Protein

Photosystem I iron-sulfur center

Gene

psaC

Organism
Thermosynechococcus elongatus (strain BP-1)
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/cytochrome c6-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.

    Catalytic activityi

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

    Cofactori

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

    Sites

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

    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 center (EC:1.97.1.12)
    Alternative name(s):
    9 kDa polypeptide
    PSI-C
    Photosystem I subunit VII
    PsaC
    Gene namesi
    Name:psaC
    Ordered Locus Names:tsl1013
    OrganismiThermosynechococcus elongatus (strain BP-1)
    Taxonomic identifieri197221 [NCBI]
    Taxonomic lineageiBacteriaCyanobacteriaOscillatoriophycideaeChroococcalesThermosynechococcus
    ProteomesiUP000000440: Chromosome

    Subcellular locationi

    GO - Cellular componenti

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

    Keywords - Cellular componenti

    Membrane, Photosystem I, Thylakoid

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Initiator methioninei1 – 11RemovedBy similarity
    Chaini2 – 8180Photosystem I iron-sulfur centerPRO_0000062018Add
    BLAST

    Interactioni

    Subunit structurei

    The cyanobacterial PSI reaction center is composed of one copy each of PsaA,B,C,D,E,F,I,J,K,L,M and X, and forms trimeric complexes.By similarity

    Protein-protein interaction databases

    STRINGi197221.tsl1013.

    Structurei

    Secondary structure

    1
    81
    Legend: HelixTurnBeta strand
    Show more details
    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Beta strandi4 – 85
    Helixi16 – 205
    Beta strandi27 – 304
    Beta strandi32 – 343
    Beta strandi37 – 415
    Helixi45 – 473
    Helixi53 – 575
    Beta strandi60 – 623
    Beta strandi64 – 685
    Turni74 – 785

    3D structure databases

    Select the link destinations:
    PDBe
    RCSB PDB
    PDBj
    Links Updated
    EntryMethodResolution (Å)ChainPositionsPDBsum
    1C51X-ray4.0
    1JB0X-ray2.50C2-81[»]
    2PPSX-ray4.0
    3PCQX-ray8.98C2-81[»]
    4FE1X-ray4.92C2-81[»]
    ProteinModelPortaliP0A415.
    SMRiP0A415. Positions 2-81.
    ModBaseiSearch...
    MobiDBiSearch...

    Miscellaneous databases

    EvolutionaryTraceiP0A415.

    Family & Domainsi

    Domains and Repeats

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Domaini2 – 31304Fe-4S ferredoxin-type 1Add
    BLAST
    Domaini37 – 68324Fe-4S ferredoxin-type 2Add
    BLAST

    Sequence similaritiesi

    Contains 2 4Fe-4S ferredoxin-type domains.Curated

    Keywords - Domaini

    Repeat

    Phylogenomic databases

    eggNOGiCOG1145.
    HOGENOMiHOG000230505.
    KOiK02691.
    OMAiEDCIGCK.
    OrthoDBiEOG60SCM3.

    Family and domain databases

    HAMAPiMF_01303. PSI_PsaC.
    InterProiIPR001450. 4Fe4S-bd_dom.
    IPR017896. 4Fe4S_Fe-S-bd.
    IPR017900. 4Fe4S_Fe_S_CS.
    IPR017491. PSI_PsaC.
    [Graphical view]
    PfamiPF12838. Fer4_7. 1 hit.
    [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.

    P0A415-1 [UniParc]FASTAAdd to Basket

    « Hide

    MAHTVKIYDT CIGCTQCVRA CPTDVLEMVP WDGCKAGQIA SSPRTEDCVG   50
    CKRCETACPT DFLSIRVYLG AETTRSMGLA Y 81
    Length:81
    Mass (Da):8,800
    Last modified:January 23, 2007 - v2
    Checksum:iED5362F4D6E48F36
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    BA000039 Genomic DNA. Translation: BAC08565.1.
    RefSeqiNP_681803.1. NC_004113.1.

    Genome annotation databases

    EnsemblBacteriaiBAC08565; BAC08565; BAC08565.
    GeneIDi1011306.
    KEGGitel:tsl1013.
    PATRICi23927326. VBITheElo119873_1063.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    BA000039 Genomic DNA. Translation: BAC08565.1 .
    RefSeqi NP_681803.1. NC_004113.1.

    3D structure databases

    Select the link destinations:
    PDBe
    RCSB PDB
    PDBj
    Links Updated
    Entry Method Resolution (Å) Chain Positions PDBsum
    1C51 X-ray 4.0
    1JB0 X-ray 2.50 C 2-81 [» ]
    2PPS X-ray 4.0
    3PCQ X-ray 8.98 C 2-81 [» ]
    4FE1 X-ray 4.92 C 2-81 [» ]
    ProteinModelPortali P0A415.
    SMRi P0A415. Positions 2-81.
    ModBasei Search...
    MobiDBi Search...

    Protein-protein interaction databases

    STRINGi 197221.tsl1013.

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Genome annotation databases

    EnsemblBacteriai BAC08565 ; BAC08565 ; BAC08565 .
    GeneIDi 1011306.
    KEGGi tel:tsl1013.
    PATRICi 23927326. VBITheElo119873_1063.

    Phylogenomic databases

    eggNOGi COG1145.
    HOGENOMi HOG000230505.
    KOi K02691.
    OMAi EDCIGCK.
    OrthoDBi EOG60SCM3.

    Miscellaneous databases

    EvolutionaryTracei P0A415.

    Family and domain databases

    HAMAPi MF_01303. PSI_PsaC.
    InterProi IPR001450. 4Fe4S-bd_dom.
    IPR017896. 4Fe4S_Fe-S-bd.
    IPR017900. 4Fe4S_Fe_S_CS.
    IPR017491. PSI_PsaC.
    [Graphical view ]
    Pfami PF12838. Fer4_7. 1 hit.
    [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. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
      Strain: BP-1.
    2. Cited for: REVIEW.
    3. "Photosystem I at 4-A resolution represents the first structural model of a joint photosynthetic reaction centre and core antenna system."
      Krauss N., Schubert W.-D., Klukas O., Fromme P., Witt H.T., Saenger W.
      Nat. Struct. Biol. 3:965-973(1996) [PubMed] [Europe PMC] [Abstract]
      Cited for: X-RAY CRYSTALLOGRAPHY (4.0 ANGSTROMS).
    4. "Photosystem I, an improved model of the stromal subunits PsaC, PsaD, and PsaE."
      Klukas O., Schubert W.-D., Jordan P., Krauss N., Fromme P., Witt H.T., Saenger W.
      J. Biol. Chem. 274:7351-7360(1999) [PubMed] [Europe PMC] [Abstract]
      Cited for: X-RAY CRYSTALLOGRAPHY (4.0 ANGSTROMS).
    5. "Three-dimensional structure of cyanobacterial photosystem I at 2.5 A resolution."
      Jordan P., Fromme P., Witt H.T., Klukas O., Saenger W., Krauss N.
      Nature 411:909-917(2001) [PubMed] [Europe PMC] [Abstract]
      Cited for: X-RAY CRYSTALLOGRAPHY (2.5 ANGSTROMS).

    Entry informationi

    Entry nameiPSAC_THEEB
    AccessioniPrimary (citable) accession number: P0A415
    Secondary accession number(s): P18083, P20451
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: March 15, 2005
    Last sequence update: January 23, 2007
    Last modified: October 1, 2014
    This is version 73 of the entry and version 2 of the sequence. [Complete history]
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programProkaryotic Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    3D-structure, Complete proteome, Reference proteome

    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