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Entry version 84 (11 Dec 2019)
Sequence version 1 (01 Jul 1993)
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Protein

Sucrose synthase 1

Gene

SS1

Organism
Hordeum vulgare (Barley)
Status
Reviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Sucrose-cleaving enzyme that provides UDP-glucose and fructose for various metabolic pathways.1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the ‘Function’ section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

  1. KM=30 mM for Sucrose1 Publication
  2. KM=5 µM for UDP1 Publication

    <p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

    GO - Biological processi

    <p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

    Molecular functionGlycosyltransferase, Transferase

    Enzyme and pathway databases

    BRENDA Comprehensive Enzyme Information System

    More...
    BRENDAi
    2.4.1.13 2687

    Protein family/group databases

    Carbohydrate-Active enZymes

    More...
    CAZyi
    GT4 Glycosyltransferase Family 4

    <p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

    <p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
    Recommended name:
    Sucrose synthase 1 (EC:2.4.1.13)
    Alternative name(s):
    Sucrose-UDP glucosyltransferase 1
    <p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
    Name:SS1
    <p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHordeum vulgare (Barley)
    <p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri4513 [NCBI]
    <p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliopsidaLiliopsidaPoalesPoaceaeBOP cladePooideaeTriticodaeTriticeaeHordeinaeHordeum

    <p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

    Molecule processing

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002046491 – 807Sucrose synthase 1Add BLAST807

    Proteomic databases

    PRoteomics IDEntifications database

    More...
    PRIDEi
    P31922

    <p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

    <p>This subsection of the ‘Expression’ section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at protein level’. <br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

    Highly expressed in developing endosperm and in roots and, at lower levels, in coleoptiles and aleurone. In 3 day old roots it is detected in cap cells and along the vascular strand, starting just after the meristemic region. In 9 day old leaves it is found in the phloem. In seeds it is distributed throughout the endosperm and also found in the assimilate-unloading tissues, the nucellar projection, the vascular area and at a high concentration in the chalazal region.1 Publication

    <p>This subsection of the ‘Expression’ section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

    Activity increases as seeds develop.1 Publication

    Gene expression databases

    ExpressionAtlas, Differential and Baseline Expression

    More...
    ExpressionAtlasi
    P31922 baseline and differential

    <p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

    <p>This subsection of the <a href="http://www.uniprot.org/help/interaction_section">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

    Forms homotetramers. In endosperm it forms both homotetramers and heterotetramers with SS2, all three possible heterotetramers are formed.

    1 Publication

    <p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

    3D structure databases

    SWISS-MODEL Repository - a database of annotated 3D protein structure models

    More...
    SMRi
    P31922

    Database of comparative protein structure models

    More...
    ModBasei
    Search...

    <p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

    Region

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the ‘Family and Domains’ section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni272 – 748GT-B glycosyltransferaseBy similarityAdd BLAST477

    <p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

    Phylogenomic databases

    evolutionary genealogy of genes: Non-supervised Orthologous Groups

    More...
    eggNOGi
    KOG0853 Eukaryota
    COG0438 LUCA

    Family and domain databases

    Integrated resource of protein families, domains and functional sites

    More...
    InterProi
    View protein in InterPro
    IPR001296 Glyco_trans_1
    IPR000368 Sucrose_synth
    IPR012820 Sucrose_synthase_pln/cyn

    Pfam protein domain database

    More...
    Pfami
    View protein in Pfam
    PF00534 Glycos_transf_1, 1 hit
    PF00862 Sucrose_synth, 1 hit

    TIGRFAMs; a protein family database

    More...
    TIGRFAMsi
    TIGR02470 sucr_synth, 1 hit

    <p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

    <p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

    P31922-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MAAKLTRLHS LRERLGATFS SHPNELIALF SRYVHQGKGM LQRHQLLAEF
    60 70 80 90 100
    DALFESDKEK YAPFEDILRA AQEAIVLPPW VALAIRPRTG VWDYIRVNVS
    110 120 130 140 150
    ELAVEELTVS EYLAFKEQLV DEHASRKFVL ELDFEPFNAS FPRPSMSKSY
    160 170 180 190 200
    GKGVQFLNRH LSSKLFQDKE SLYPLLNFLK AHNYKGTTMI LNDRIQSLRG
    210 220 230 240 250
    LQSALRKAEE YLVSIPEDTP SSEFNHRFQE LGLEKGWGDT AKRVHDTIHL
    260 270 280 290 300
    LLDLLEAPDP ASLEKFLGTI PMMFNVVILS PHGYFAQSNV LGYPDTGGQV
    310 320 330 340 350
    VYILDQVRAL ENEMLLRIKQ QGLDITPKIL IVTRLLPDAV GTTCGQRLEK
    360 370 380 390 400
    VIGTEHTDIL RVPFRTENGI RKWISRFDVW PYLETYTEDV ANELMREMQT
    410 420 430 440 450
    KPDLIIGNYS DGNLVATLLA HKLGVTQCTI AHALEKTKYP NSDIYLDKFD
    460 470 480 490 500
    SQYHFSCQFT ADLIAMNHTD FIITSTFQEI AGSKDSVGQY ESHIAFTLPD
    510 520 530 540 550
    LYRVVHGIDV FDPKFNIVSP GADMTVYFPY TETDKRLTAF HSEIEELLYS
    560 570 580 590 600
    DVENDEHKFV LKDRNKPIIF SMARLDRVKN MTGLVEMYGK NAHLKDLANL
    610 620 630 640 650
    VIVAGDHGKE SKDREEQAEF KRMYSLIEEY KLKGHIRWIS AQMNRVRNGE
    660 670 680 690 700
    LYRYICDTKG AFVQPAFYEA FGLTVIEAMT CGLPTIATCH GGPAEIIVDG
    710 720 730 740 750
    VSGLHIDPYH SDKAADILVN FFEKSTADPS YWDKISQGGL KRIYEKYTWK
    760 770 780 790 800
    LYSERLMTLT GVYGFWKYVS NLERRETRRY LEMFYALKYR SLAAAVPLAV

    DGESSGN
    Length:807
    Mass (Da):92,211
    Last modified:July 1, 1993 - v1
    <p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iA863A8C876A060C8
    GO

    Experimental Info

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti370I → IL in CAA47264 (Ref. 2) Curated1
    Sequence conflicti374I → Y in CAA47264 (Ref. 2) Curated1
    Sequence conflicti392 – 393NE → KQ in CAA47264 (Ref. 2) Curated2

    Sequence databases

    Select the link destinations:

    EMBL nucleotide sequence database

    More...
    EMBLi

    GenBank nucleotide sequence database

    More...
    GenBanki

    DNA Data Bank of Japan; a nucleotide sequence database

    More...
    DDBJi
    Links Updated
    X65871 mRNA Translation: CAA46701.1
    X66728 mRNA Translation: CAA47264.1

    Protein sequence database of the Protein Information Resource

    More...
    PIRi
    S29242

    <p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

    <p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

    Sequence databases

    Select the link destinations:
    EMBLi
    GenBanki
    DDBJi
    Links Updated
    X65871 mRNA Translation: CAA46701.1
    X66728 mRNA Translation: CAA47264.1
    PIRiS29242

    3D structure databases

    SMRiP31922
    ModBaseiSearch...

    Protein family/group databases

    CAZyiGT4 Glycosyltransferase Family 4

    Proteomic databases

    PRIDEiP31922

    Phylogenomic databases

    eggNOGiKOG0853 Eukaryota
    COG0438 LUCA

    Enzyme and pathway databases

    BRENDAi2.4.1.13 2687

    Gene expression databases

    ExpressionAtlasiP31922 baseline and differential

    Family and domain databases

    InterProiView protein in InterPro
    IPR001296 Glyco_trans_1
    IPR000368 Sucrose_synth
    IPR012820 Sucrose_synthase_pln/cyn
    PfamiView protein in Pfam
    PF00534 Glycos_transf_1, 1 hit
    PF00862 Sucrose_synth, 1 hit
    TIGRFAMsiTIGR02470 sucr_synth, 1 hit

    ProtoNet; Automatic hierarchical classification of proteins

    More...
    ProtoNeti
    Search...

    MobiDB: a database of protein disorder and mobility annotations

    More...
    MobiDBi
    Search...

    <p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

    <p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiSUS1_HORVU
    <p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P31922
    <p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 1993
    Last sequence update: July 1, 1993
    Last modified: December 11, 2019
    This is version 84 of the entry and version 1 of the sequence. See complete history.
    <p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
    Annotation programPlant Protein Annotation Program

    <p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

    Documents

    1. SIMILARITY comments
      Index of protein domains and families
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