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Protein

Sugar transport protein 9

Gene

STP9

Organism
Arabidopsis thaliana (Mouse-ear cress)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Mediates an active uptake of hexoses, probably by sugar/hydrogen symport. Mostly transports glucose, and barely galactose, xylose and mannose.1 Publication

Enzyme regulationi

Inhibited by uncouplers such as 2,4-dinitrophenol and carbonyl cyanide-m-chlorophenyl-hydrazone.1 Publication

Kineticsi

  1. KM=84 µM for glucose (at pH 5.5)1 Publication

    pH dependencei

    Optimum pH is 5.5.1 Publication

    GO - Molecular functioni

    GO - Biological processi

    Keywordsi

    Biological processSugar transport, Symport, Transport

    Names & Taxonomyi

    Protein namesi
    Recommended name:
    Sugar transport protein 9
    Alternative name(s):
    Hexose transporter 9
    Gene namesi
    Name:STP9
    Ordered Locus Names:At1g50310
    ORF Names:F14I3.9
    OrganismiArabidopsis thaliana (Mouse-ear cress)
    Taxonomic identifieri3702 [NCBI]
    Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaeudicotyledonsGunneridaePentapetalaerosidsmalvidsBrassicalesBrassicaceaeCamelineaeArabidopsis
    Proteomesi
    • UP000006548 Componenti: Chromosome 1

    Organism-specific databases

    AraportiAT1G50310
    TAIRilocus:2011957 AT1G50310

    Subcellular locationi

    Topology

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Topological domaini1 – 18CytoplasmicSequence analysisAdd BLAST18
    Transmembranei19 – 39Helical; Name=1Sequence analysisAdd BLAST21
    Transmembranei86 – 106Helical; Name=2Sequence analysisAdd BLAST21
    Transmembranei120 – 140Helical; Name=3Sequence analysisAdd BLAST21
    Transmembranei143 – 163Helical; Name=4Sequence analysisAdd BLAST21
    Transmembranei170 – 190Helical; Name=5Sequence analysisAdd BLAST21
    Transmembranei204 – 224Helical; Name=6Sequence analysisAdd BLAST21
    Transmembranei292 – 312Helical; Name=7Sequence analysisAdd BLAST21
    Transmembranei324 – 344Helical; Name=8Sequence analysisAdd BLAST21
    Transmembranei351 – 371Helical; Name=9Sequence analysisAdd BLAST21
    Transmembranei390 – 410Helical; Name=10Sequence analysisAdd BLAST21
    Transmembranei429 – 449Helical; Name=11Sequence analysisAdd BLAST21
    Transmembranei454 – 474Helical; Name=12Sequence analysisAdd BLAST21
    Topological domaini475 – 517CytoplasmicSequence analysisAdd BLAST43

    Keywords - Cellular componenti

    Membrane

    PTM / Processingi

    Molecule processing

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    ChainiPRO_00000504391 – 517Sugar transport protein 9Add BLAST517

    Proteomic databases

    PaxDbiQ9SX48
    PRIDEiQ9SX48

    Expressioni

    Tissue specificityi

    Pollen specific (at protein level).1 Publication

    Developmental stagei

    Transcripts accumulate in mature pollen before and during germination, but translation starts only when pollen germination initiates, and continues in pollen tubes.1 Publication

    Gene expression databases

    ExpressionAtlasiQ9SX48 differential
    GenevisibleiQ9SX48 AT

    Interactioni

    Protein-protein interaction databases

    BioGridi26678, 1 interactor
    STRINGi3702.AT1G50310.1

    Structurei

    3D structure databases

    ProteinModelPortaliQ9SX48
    ModBaseiSearch...
    MobiDBiSearch...

    Family & Domainsi

    Sequence similaritiesi

    Keywords - Domaini

    Transmembrane, Transmembrane helix

    Phylogenomic databases

    eggNOGiKOG0254 Eukaryota
    ENOG410XNQK LUCA
    HOGENOMiHOG000202867
    InParanoidiQ9SX48
    OMAiIFYYSTP
    OrthoDBiEOG093608DR
    PhylomeDBiQ9SX48

    Family and domain databases

    CDDicd06174 MFS, 1 hit
    InterProiView protein in InterPro
    IPR020846 MFS_dom
    IPR005828 MFS_sugar_transport-like
    IPR036259 MFS_trans_sf
    IPR003663 Sugar/inositol_transpt
    IPR005829 Sugar_transporter_CS
    PfamiView protein in Pfam
    PF00083 Sugar_tr, 1 hit
    PRINTSiPR00171 SUGRTRNSPORT
    SUPFAMiSSF103473 SSF103473, 1 hit
    TIGRFAMsiTIGR00879 SP, 1 hit
    PROSITEiView protein in PROSITE
    PS50850 MFS, 1 hit
    PS00216 SUGAR_TRANSPORT_1, 1 hit
    PS00217 SUGAR_TRANSPORT_2, 1 hit

    Sequencei

    Sequence statusi: Complete.

    Q9SX48-1 [UniParc]FASTAAdd to basket

    « Hide

            10         20         30         40         50
    MAGGAFVSEG GGGGNSYEGG VTVFVIMTCI VAAMGGLLFG YDLGISGGVT
    60 70 80 90 100
    SMEEFLSKFF PEVDKQMHEA RRETAYCKFD NQLLQLFTSS LYLAALASSF
    110 120 130 140 150
    VASAVTRKYG RKISMFVGGV AFLIGSLFNA FATNVAMLIV GRLLLGVGVG
    160 170 180 190 200
    FANQSTPVYL SEMAPAKIRG ALNIGFQMAI TIGILIANLI NYGTSQMAKN
    210 220 230 240 250
    GWRVSLGLAA VPAVIMVIGS FVLPDTPNSM LERGKYEQAR EMLQKIRGAD
    260 270 280 290 300
    NVDEEFQDLC DACEAAKKVD NPWKNIFQQA KYRPALVFCS AIPFFQQITG
    310 320 330 340 350
    INVIMFYAPV LFKTLGFADD ASLISAVITG AVNVVSTLVS IYAVDRYGRR
    360 370 380 390 400
    ILFLEGGIQM IVSQIVVGTL IGMKFGTTGS GTLTPATADW ILAFICLYVA
    410 420 430 440 450
    GFAWSWGPLG WLVPSEICPL EIRPAGQAIN VSVNMFFTFL IGQFFLTMLC
    460 470 480 490 500
    HMKFGLFYFF GGMVAVMTVF IYFLLPETKG VPIEEMGRVW KQHPFWKRYM
    510
    PDDAVIGGGE ENYVKEV
    Length:517
    Mass (Da):56,280
    Last modified:May 1, 2000 - v1
    Checksum:i44A9D5EBAAA6FA57
    GO

    Experimental Info

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    Sequence conflicti471I → T in CAA04907 (Ref. 4) Curated1

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    AJ344336 mRNA Translation: CAC69072.1
    AC007980 Genomic DNA Translation: AAD50040.1
    CP002684 Genomic DNA Translation: AEE32535.1
    AJ001662 Genomic DNA Translation: CAA04907.1
    PIRiD96539
    RefSeqiNP_175449.1, NM_103915.2
    UniGeneiAt.26446

    Genome annotation databases

    EnsemblPlantsiAT1G50310.1; AT1G50310.1; AT1G50310
    GeneIDi841453
    GrameneiAT1G50310.1; AT1G50310.1; AT1G50310
    KEGGiath:AT1G50310

    Similar proteinsi

    Entry informationi

    Entry nameiSTP9_ARATH
    AccessioniPrimary (citable) accession number: Q9SX48
    Secondary accession number(s): O81706
    Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 24, 2006
    Last sequence update: May 1, 2000
    Last modified: May 23, 2018
    This is version 107 of the entry and version 1 of the sequence. See complete history.
    Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programPlant Protein Annotation Program

    Miscellaneousi

    Keywords - Technical termi

    Complete proteome, Reference proteome

    Documents

    1. Arabidopsis thaliana
      Arabidopsis thaliana: entries and gene names
    2. SIMILARITY comments
      Index of protein domains and families
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