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Database: UniProt
Entry: B9T123_RICCO
LinkDB: B9T123_RICCO
Original site: B9T123_RICCO 
ID   B9T123_RICCO            Unreviewed;       998 AA.
AC   B9T123;
DT   24-MAR-2009, integrated into UniProtKB/TrEMBL.
DT   24-MAR-2009, sequence version 1.
DT   24-JAN-2024, entry version 52.
DE   RecName: Full=Sucrose-phosphate synthase {ECO:0000256|ARBA:ARBA00012536, ECO:0000256|RuleBase:RU368006};
DE            EC=2.4.1.14 {ECO:0000256|ARBA:ARBA00012536, ECO:0000256|RuleBase:RU368006};
GN   ORFNames=RCOM_0271410 {ECO:0000313|EMBL:EEF30424.1};
OS   Ricinus communis (Castor bean).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Malpighiales; Euphorbiaceae; Acalyphoideae; Acalypheae;
OC   Ricinus.
OX   NCBI_TaxID=3988 {ECO:0000313|Proteomes:UP000008311};
RN   [1] {ECO:0000313|Proteomes:UP000008311}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Hale {ECO:0000313|Proteomes:UP000008311};
RX   PubMed=20729833; DOI=10.1038/nbt.1674;
RA   Chan A.P., Crabtree J., Zhao Q., Lorenzi H., Orvis J., Puiu D.,
RA   Melake-Berhan A., Jones K.M., Redman J., Chen G., Cahoon E.B., Gedil M.,
RA   Stanke M., Haas B.J., Wortman J.R., Fraser-Liggett C.M., Ravel J.,
RA   Rabinowicz P.D.;
RT   "Draft genome sequence of the oilseed species Ricinus communis.";
RL   Nat. Biotechnol. 28:951-956(2010).
CC   -!- FUNCTION: Plays a role in photosynthetic sucrose synthesis by
CC       catalyzing the rate-limiting step of sucrose biosynthesis from UDP-
CC       glucose and fructose- 6-phosphate. Involved in the regulation of carbon
CC       partitioning in the leaves of plants. May regulate the synthesis of
CC       sucrose and therefore play a major role as a limiting factor in the
CC       export of photoassimilates out of the leaf. Plays a role for sucrose
CC       availability that is essential for plant growth and fiber elongation.
CC       {ECO:0000256|RuleBase:RU368006}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=beta-D-fructose 6-phosphate + UDP-alpha-D-glucose = H(+) +
CC         sucrose 6(F)-phosphate + UDP; Xref=Rhea:RHEA:22172,
CC         ChEBI:CHEBI:15378, ChEBI:CHEBI:57634, ChEBI:CHEBI:57723,
CC         ChEBI:CHEBI:58223, ChEBI:CHEBI:58885; EC=2.4.1.14;
CC         Evidence={ECO:0000256|ARBA:ARBA00001481,
CC         ECO:0000256|RuleBase:RU368006};
CC   -!- PATHWAY: Glycan biosynthesis; sucrose biosynthesis; sucrose from D-
CC       fructose 6-phosphate and UDP-alpha-D-glucose: step 1/2.
CC       {ECO:0000256|ARBA:ARBA00005027, ECO:0000256|RuleBase:RU368006}.
CC   -!- SUBUNIT: Homodimer or homotetramer. {ECO:0000256|ARBA:ARBA00011774,
CC       ECO:0000256|RuleBase:RU368006}.
CC   -!- SIMILARITY: Belongs to the glycosyltransferase 1 family.
CC       {ECO:0000256|ARBA:ARBA00006530, ECO:0000256|RuleBase:RU368006}.
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DR   EMBL; EQ974322; EEF30424.1; -; Genomic_DNA.
DR   AlphaFoldDB; B9T123; -.
DR   STRING; 3988.B9T123; -.
DR   eggNOG; KOG0853; Eukaryota.
DR   InParanoid; B9T123; -.
DR   UniPathway; UPA00371; UER00545.
DR   Proteomes; UP000008311; Unassembled WGS sequence.
DR   GO; GO:0016157; F:sucrose synthase activity; IEA:InterPro.
DR   GO; GO:0046524; F:sucrose-phosphate synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0005986; P:sucrose biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd03800; GT4_sucrose_synthase; 1.
DR   CDD; cd16419; HAD_SPS; 1.
DR   Gene3D; 3.90.1070.10; -; 1.
DR   Gene3D; 3.40.50.2000; Glycogen Phosphorylase B; 2.
DR   Gene3D; 3.40.50.1000; HAD superfamily/HAD-like; 1.
DR   InterPro; IPR001296; Glyco_trans_1.
DR   InterPro; IPR023214; HAD_sf.
DR   InterPro; IPR006380; SPP-like_dom.
DR   InterPro; IPR035659; SPS_C.
DR   InterPro; IPR012819; SPS_pln.
DR   InterPro; IPR000368; Sucrose_synth.
DR   NCBIfam; TIGR02468; sucrsPsyn_pln; 1.
DR   PANTHER; PTHR46039:SF2; SUCROSE-PHOSPHATE SYNTHASE 1; 1.
DR   PANTHER; PTHR46039; SUCROSE-PHOSPHATE SYNTHASE 3-RELATED; 1.
DR   Pfam; PF00534; Glycos_transf_1; 1.
DR   Pfam; PF05116; S6PP; 1.
DR   Pfam; PF00862; Sucrose_synth; 1.
DR   SUPFAM; SSF53756; UDP-Glycosyltransferase/glycogen phosphorylase; 1.
PE   3: Inferred from homology;
KW   Glycosyltransferase {ECO:0000256|ARBA:ARBA00022676,
KW   ECO:0000256|RuleBase:RU368006};
KW   Reference proteome {ECO:0000313|Proteomes:UP000008311};
KW   Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|RuleBase:RU368006}.
FT   DOMAIN          107..374
FT                   /note="Sucrose synthase"
FT                   /evidence="ECO:0000259|Pfam:PF00862"
FT   DOMAIN          412..586
FT                   /note="Glycosyl transferase family 1"
FT                   /evidence="ECO:0000259|Pfam:PF00534"
FT   DOMAIN          720..928
FT                   /note="Sucrose phosphatase-like"
FT                   /evidence="ECO:0000259|Pfam:PF05116"
FT   REGION          612..634
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   998 AA;  112011 MW;  B6A43E9A05CE10ED CRC64;
     MAGNDWINSY LEAILDVGPG LDDAKSSLLL RERGRFSPTR YFVEQVITGF DETDLHRSWA
     RAQATRSPQE RNTRLENMCW RIWNLARQKK QVGFCYETYP DYDVRIQIVI FPILHGLIRG
     ENMELGRDSD TGGQVKYVVE LARALGSMPG VYRVDLLTRQ VSSPDVDWSY GEPTEMLTLR
     NLENFEDEMG ESSGAYIVRI PFGPRDKYVP KELLWPHIPE FVDGALNHII QMSKVLGEQI
     GGGKPIWPVA IHGHYADAGD SAALLSGALN VPMLFTGHSL GRDKLEQLLK QGRLSRDEIN
     LTYKIMRRIE AEEFSLDSSE IVITSTRQEI DEQWRLYDGF DPILERKLRA RIKRNVSCYG
     RFMPRMAIIP PGMEFHHIVP QEGDMDGEIE GNEDHPTSPD PPIWTEIMRF FTNPRKPMIL
     ALARPDPKKN ITTLVKAFGE CRPLRELANL TLVMGNRDGI DEMSSTNASV LLSVLKLIDK
     YDLYGQVAYP KHHKQSDVPD IYRLAAKTKG VFINPAFIEP FGLTLIEAAA HGLPIVATKN
     GGPVDIHRVL DNGLLVDPHD QQSIADALLK LVADKQLWEK CRQNGLKNIH LFSWPEHCKS
     YLSRIASCKP RHPKWEKNND GGDTSDTDSP GDSLRDIHDL SLNLKFSLDG EKTGASGTDN
     SLEYEGDGSD KKTKIENAVL AWSKGVSKNT QKMGSTEKGE HNNSSGKFPA LRRRKQIFVI
     AVDFDNISVL LEATRKIFDA VERERTEGSI GFILSTSLTI SEIHSFLVSG GFSPSDFDAF
     ICNSGSDLYY SNHNPEDGPF VVDFYYHSHI EYRWGGEGLR KTLVRWAASV NDKKSKNEEH
     IVTAAEQLST NYCYAFKVQT PGLVPPVKEL RKLLRIQALR SHVIYCQNGT RINVIPVLAS
     RSQALRYLYV RWGVELANMV IFVGECGDTD YEGLLGGIHK SIILKGVCCG ANNQLHANRN
     YPLSDVIPSD NSNVVQTAEE CTCSDILGSL EQLGCLKG
//
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