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Protein

Probable sucrose-phosphate synthase 1

Gene

SPS1

Organism
Oryza sativa subsp. indica (Rice)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Plays a role in photosynthetic sucrose synthesis by catalyzing the rate-limiting step of sucrose biosynthesis from UDP-glucose and fructose- 6-phosphate. Involved in the regulation of carbon partitioning in the leaves of plants. May regulate the synthesis of sucrose and therefore play a major role as a limiting factor in the export of photoassimilates out of the leaf. Plays a role for sucrose availability that is essential for plant growth and fiber elongation (By similarity).By similarity

Catalytic activityi

UDP-glucose + D-fructose 6-phosphate = UDP + sucrose 6(F)-phosphate.

Enzyme regulationi

Activity is regulated by phosphorylation and moderated by concentration of metabolites and light.By similarity

Pathwayi: sucrose biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes sucrose from D-fructose 6-phosphate and UDP-alpha-D-glucose.
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. Probable sucrose-phosphate synthase 1 (SPS1)
  2. no protein annotated in this organism
This subpathway is part of the pathway sucrose biosynthesis, which is itself part of Glycan biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes sucrose from D-fructose 6-phosphate and UDP-alpha-D-glucose, the pathway sucrose biosynthesis and in Glycan biosynthesis.

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Enzyme and pathway databases

BioCyciMetaCyc:MONOMER-1762.
BRENDAi2.4.1.14. 4460.
UniPathwayiUPA00371; UER00545.

Protein family/group databases

CAZyiGT4. Glycosyltransferase Family 4.

Names & Taxonomyi

Protein namesi
Recommended name:
Probable sucrose-phosphate synthase 1 (EC:2.4.1.14)
Alternative name(s):
UDP-glucose-fructose-phosphate glucosyltransferase
Gene namesi
Name:SPS1
ORF Names:OsI_004842
OrganismiOryza sativa subsp. indica (Rice)
Taxonomic identifieri39946 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladeOryzoideaeOryzeaeOryzinaeOryza
Proteomesi
  • UP000007015 Componenti: Chromosome 1

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 10841084Probable sucrose-phosphate synthase 1PRO_0000303664Add
BLAST

PTM databases

iPTMnetiA2WYE9.

Expressioni

Tissue specificityi

Expressed in leaves mesophyll cells, scutellum of germinating seedlings and pollen of immature inflorescences.2 Publications

Interactioni

Subunit structurei

Homodimer or homotetramer.By similarity

Protein-protein interaction databases

STRINGi39946.BGIOSGA000239-PA.

Structurei

3D structure databases

ProteinModelPortaliA2WYE9.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Compositional bias

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Compositional biasi22 – 4524Poly-GlyAdd
BLAST
Compositional biasi793 – 7975Poly-Arg

Sequence similaritiesi

Belongs to the glycosyltransferase 1 family.Curated

Phylogenomic databases

eggNOGiKOG0483. Eukaryota.
KOG0853. Eukaryota.
COG0438. LUCA.
HOGENOMiHOG000009685.

Family and domain databases

InterProiIPR001296. Glyco_trans_1.
IPR006380. SPP_N.
IPR000368. Sucrose_synth.
IPR012819. SucrsPsyn_pln.
[Graphical view]
PfamiPF00534. Glycos_transf_1. 1 hit.
PF05116. S6PP. 1 hit.
PF00862. Sucrose_synth. 1 hit.
[Graphical view]
TIGRFAMsiTIGR02468. sucrsPsyn_pln. 1 hit.

Sequencei

Sequence statusi: Complete.

A2WYE9-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAGNEWINGY LEAILDSGGA AGGGGGGGGG GGGGGGGGGG GGGGGVDPRS
60 70 80 90 100
PAAGAASPRG PHMNFNPTHY FVEEVVKGVD ESDLHRTWIK VVATRNARER
110 120 130 140 150
STRLENMCWR IWHLARKKKQ LELEGILRIS ARRKEQEQVR RETSEDLAED
160 170 180 190 200
LFEGEKADTV GELAQQDTPM KKKFQRNFSE LTVSWSDENK EKKLYIVLIS
210 220 230 240 250
LHGLVRGDNM ELGRDSDTGG QVKYVVELAR ALAMMPGVYR VDLFTRQVSS
260 270 280 290 300
PEVDWSYGEP TEMLTSGSTD GEGSGESAGA YIVRIPCGPR DKYLRKEALW
310 320 330 340 350
PYLQEFVDGA LAHILNMSKA LGEQVSNGKL VLPYVIHGHY ADAGDVAALL
360 370 380 390 400
SGALNVPMVL TGHSLGRNKL EQIMKQGRMS KEEIDSTYKI MRRIEGEELA
410 420 430 440 450
LDAAELVITS TRQEIDEQWG LYDGFDVKLE KVLRARARRG VSCHGRFMPR
460 470 480 490 500
MVVIPPGMDF SSVVVPEDTS DGDDGKDFEI ASPRSLPPIW AEVMRFLTNP
510 520 530 540 550
HKPMILALSR PDPKKNITTL VKAFGECRPL RELANLILIM GNRDDIDEMS
560 570 580 590 600
AGNASVLTTV LKLIDKYDLY GSVAFPKHHK QSDVPEIYRL TGKMKGVFIN
610 620 630 640 650
PALVEPFGLT LIEAAAHGLP IVATKNGGPV DIKNALNNGL LVDPHDQHAI
660 670 680 690 700
ADALLKLVAD KNLWQECRKN GLRNIQLYSW PEHCRTYLTR IAGCRIRNPR
710 720 730 740 750
WLMDTPADAA AEEEEALEDS LMDVQDLSLR LSIDGERGSS MNDAPSSDPQ
760 770 780 790 800
DSVQRIMNKI KRSSPADTDG AKIPAEAAAT ATSGAMNKYP LLRRRRRLFV
810 820 830 840 850
IAVDCYGDDG SASKRMLQVI QEVFRAVRSD SQMSRISGFA LSTAMPLPET
860 870 880 890 900
LKLLQLGKIP PTDFDALICG SGSEVYYPST AQCVDAGGRL RPDQDYLLHI
910 920 930 940 950
NHRWSHDGAK QTIAKLAHDG SGTNVEPDVE SCNPHCVSFF IKDPNKVRTI
960 970 980 990 1000
DEMRERVRMR GLRCHLMYCR NATRLQVVPL LASRSQALRY LFVRWGLSVG
1010 1020 1030 1040 1050
NMYLIVGEHG DTDHEEMLSG LHKTVIIRGV TEKGSEQLVR SSGSYQREDV
1060 1070 1080
VPSESPLIAF TKGDLKADEI MRALKEVTKA ASGM
Length:1,084
Mass (Da):119,348
Last modified:September 11, 2007 - v2
Checksum:iA42BA599C4DF4556
GO

Sequence cautioni

The sequence AAC49379 differs from that shown.Sequencing errors.Curated
The sequence AAC49379 differs from that shown. Reason: Frameshift at several positions. Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U33175 Genomic DNA. Translation: AAC49379.1. Sequence problems.
CM000126 Genomic DNA. No translation available.
PIRiJC4783.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U33175 Genomic DNA. Translation: AAC49379.1. Sequence problems.
CM000126 Genomic DNA. No translation available.
PIRiJC4783.

3D structure databases

ProteinModelPortaliA2WYE9.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi39946.BGIOSGA000239-PA.

Protein family/group databases

CAZyiGT4. Glycosyltransferase Family 4.

PTM databases

iPTMnetiA2WYE9.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

eggNOGiKOG0483. Eukaryota.
KOG0853. Eukaryota.
COG0438. LUCA.
HOGENOMiHOG000009685.

Enzyme and pathway databases

UniPathwayiUPA00371; UER00545.
BioCyciMetaCyc:MONOMER-1762.
BRENDAi2.4.1.14. 4460.

Family and domain databases

InterProiIPR001296. Glyco_trans_1.
IPR006380. SPP_N.
IPR000368. Sucrose_synth.
IPR012819. SucrsPsyn_pln.
[Graphical view]
PfamiPF00534. Glycos_transf_1. 1 hit.
PF05116. S6PP. 1 hit.
PF00862. Sucrose_synth. 1 hit.
[Graphical view]
TIGRFAMsiTIGR02468. sucrsPsyn_pln. 1 hit.
ProtoNetiSearch...

Entry informationi

Entry nameiSPSA1_ORYSI
AccessioniPrimary (citable) accession number: A2WYE9
Secondary accession number(s): Q43010
, Q43802, Q5JLN3, Q94JN0
Entry historyi
Integrated into UniProtKB/Swiss-Prot: September 11, 2007
Last sequence update: September 11, 2007
Last modified: April 13, 2016
This is version 57 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.