Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Basket 0
(max 400 entries)x

Your basket is currently empty.

Select item(s) and click on "Add to basket" to create your own collection here
(400 entries max)

A0A334

- PSAB_COFAR

UniProt

A0A334 - PSAB_COFAR

Protein

Photosystem I P700 chlorophyll a apoprotein A2

Gene

psaB

Organism
Coffea arabica (Arabian coffee)
Status
Reviewed - Annotation score: 4 out of 5- Protein inferred from homologyi
    • BLAST
    • Align
    • Format
    • Add to basket
    • History
      Entry version 39 (01 Oct 2014)
      Sequence version 1 (14 Nov 2006)
      Previous versions | rss
    • Help video
    • Feedback
    • Comment

    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.UniRule annotation

    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 bindingi559 – 5591Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
    Metal bindingi568 – 5681Iron-sulfur (4Fe-4S); shared with dimeric partnerUniRule annotation
    Metal bindingi654 – 6541Magnesium (chlorophyll-a B1 axial ligand; P700 special pair)UniRule annotation
    Metal bindingi662 – 6621Magnesium (chlorophyll-a B3 axial ligand)UniRule annotation
    Binding sitei670 – 6701Chlorophyll-a B3UniRule annotation
    Binding sitei671 – 6711Phylloquinone BUniRule 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 A2UniRule annotation (EC:1.97.1.12UniRule annotation)
    Alternative name(s):
    PSI-BUniRule annotation
    PsaBUniRule annotation
    Gene namesi
    Name:psaBUniRule annotation
    Encoded oniPlastid; Chloroplast
    OrganismiCoffea arabica (Arabian coffee)
    Taxonomic identifieri13443 [NCBI]
    Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaeasteridslamiidsGentianalesRubiaceaeIxoroideaeCoffeeaeCoffea

    Subcellular locationi

    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 – 734734Photosystem I P700 chlorophyll a apoprotein A2PRO_0000277109Add
    BLAST

    Proteomic databases

    PRIDEiA0A334.

    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

    ProteinModelPortaliA0A334.
    SMRiA0A334. Positions 2-733.
    ModBaseiSearch...
    MobiDBiSearch...

    Transmembrane

    Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
    Transmembranei46 – 6924Helical; Name=IUniRule annotationAdd
    BLAST
    Transmembranei135 – 15824Helical; Name=IIUniRule annotationAdd
    BLAST
    Transmembranei175 – 19925Helical; Name=IIIUniRule annotationAdd
    BLAST
    Transmembranei273 – 29119Helical; Name=IVUniRule annotationAdd
    BLAST
    Transmembranei330 – 35324Helical; Name=VUniRule annotationAdd
    BLAST
    Transmembranei369 – 39527Helical; Name=VIUniRule annotationAdd
    BLAST
    Transmembranei417 – 43923Helical; Name=VIIUniRule annotationAdd
    BLAST
    Transmembranei517 – 53519Helical; Name=VIIIUniRule annotationAdd
    BLAST
    Transmembranei575 – 59622Helical; Name=IXUniRule annotationAdd
    BLAST
    Transmembranei643 – 66523Helical; Name=XUniRule annotationAdd
    BLAST
    Transmembranei707 – 72721Helical; 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_00482. PSI_PsaB.
    InterProiIPR001280. PSI_PsaA/B.
    IPR020586. PSI_PsaA/B_CS.
    IPR006244. PSI_PsaB.
    [Graphical view]
    PfamiPF00223. PsaA_PsaB. 1 hit.
    [Graphical view]
    PIRSFiPIRSF002905. PSI_A. 1 hit.
    PRINTSiPR00257. PHOTSYSPSAAB.
    SUPFAMiSSF81558. SSF81558. 1 hit.
    TIGRFAMsiTIGR01336. psaB. 1 hit.
    PROSITEiPS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
    [Graphical view]

    Sequencei

    Sequence statusi: Complete.

    A0A334-1 [UniParc]FASTAAdd to Basket

    « Hide

    MALRFPRFSQ GLAQDPTTRR IWFGIATAHD FESHDDITEE RLYQNIFASH    50
    FGQLAIIFLW TSGNLFHVAW QGNFESWVQD PLHVRPIAHA IWDPHFGQPA 100
    VEAFTRGGAL GPVNIAYSGV YQWWYTIGLR TNEDLYTGAL FLLFISAIFL 150
    IAGWLHLQPK WKPSVSWFKN AESRLNHHLS GLFGVSSLAW TGHLVHVAIP 200
    GSRGEYVRWN NFLDVLPHPQ GLGPLFTGQW NLYAQNPDSG SHLFGTSQGA 250
    GTAILTLLGG FHPQTQSLWL TDIAHHHLAI AFIFLVAGHM YRTNFGIGHS 300
    MKDLLDAHIP PGGRLGRGHK GLYDTINNSL HFQLGLALAS LGVITSLVAQ 350
    HMYSLPAYAF IAQDFTTQAA LYTHHQYIAG FIMTGAFAHG AIFFIRDYNP 400
    EQNEDNVLAR MLDHKEAIIS HLSWASLFLG FHTLGLYVHN DVMLAFGTPE 450
    KQILIEPIFA QWIQSAHGKT SYGFDVLLSS TSGPAFNAGR SIWLPGWLNA 500
    VNENSNSLFL TIGPGDFLVH HAIALGLHTT TLILVKGALD ARGSKLMPDK 550
    KDFGYSFPCD GPGRGGTCDI SAWDAFYLAV FWMLNTIGWV TFYWHWKHIT 600
    LWQGNVSQFN ESSTYLMGWL RDYLWLNSSQ LINGYNPFGM NSLSVWAWMF 650
    LFGHLVWAIG FMFLISWRGY WQELIETLAW AHERTPLANL IRWRDKPVAL 700
    SIVQARLVGL AHFSVGYIFT YAAFLIASTS GKFG 734
    Length:734
    Mass (Da):82,439
    Last modified:November 14, 2006 - v1
    Checksum:i0EA1499536194031
    GO

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    EF044213 Genomic DNA. Translation: ABJ89678.1.
    RefSeqiYP_817481.1. NC_008535.1.

    Genome annotation databases

    GeneIDi4421875.

    Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBL
    GenBank
    DDBJ
    Links Updated
    EF044213 Genomic DNA. Translation: ABJ89678.1 .
    RefSeqi YP_817481.1. NC_008535.1.

    3D structure databases

    ProteinModelPortali A0A334.
    SMRi A0A334. Positions 2-733.
    ModBasei Search...
    MobiDBi Search...

    Proteomic databases

    PRIDEi A0A334.

    Protocols and materials databases

    Structural Biology Knowledgebase Search...

    Genome annotation databases

    GeneIDi 4421875.

    Family and domain databases

    Gene3Di 1.20.1130.10. 1 hit.
    HAMAPi MF_00482. PSI_PsaB.
    InterProi IPR001280. PSI_PsaA/B.
    IPR020586. PSI_PsaA/B_CS.
    IPR006244. PSI_PsaB.
    [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 TIGR01336. psaB. 1 hit.
    PROSITEi PS00419. PHOTOSYSTEM_I_PSAAB. 1 hit.
    [Graphical view ]
    ProtoNeti Search...

    Publicationsi

    1. "The complete nucleotide sequence of the coffee (Coffea arabica L.) chloroplast genome: organization and implications for biotechnology and phylogenetic relationships amongst angiosperms."
      Samson N., Bausher M.G., Lee S.-B., Jansen R.K., Daniell H.
      Plant Biotechnol. J. 5:339-353(2007) [PubMed] [Europe PMC] [Abstract]
      Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

    Entry informationi

    Entry nameiPSAB_COFAR
    AccessioniPrimary (citable) accession number: A0A334
    Entry historyi
    Integrated into UniProtKB/Swiss-Prot: February 6, 2007
    Last sequence update: November 14, 2006
    Last modified: October 1, 2014
    This is version 39 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