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Protein

Probable sucrose-phosphate synthase 3

Gene

SPS3

Organism
Oryza sativa subsp. japonica (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 5 (SPS5), Probable sucrose-phosphate synthase 4 (SPS4), Probable sucrose-phosphate synthase 3 (SPS3), Probable sucrose-phosphate synthase 1 (SPS1), Probable sucrose-phosphate synthase 2 (SPS2)
  2. Probable sucrose-phosphatase 3 (SPP3), Probable sucrose-phosphatase 1 (SPP1), Sucrose-phosphatase 2 (SPP2)
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

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 3 (EC:2.4.1.14)
Alternative name(s):
Sucrose phosphate synthase 3F
Short name:
OsSPS3F
UDP-glucose-fructose-phosphate glucosyltransferase
Gene namesi
Name:SPS3
Synonyms:SPS6
Ordered Locus Names:Os06g0643800, LOC_Os06g43630
ORF Names:P0017B12.4, P0416A11.37
OrganismiOryza sativa subsp. japonica (Rice)
Taxonomic identifieri39947 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladeOryzoideaeOryzeaeOryzinaeOryza
Proteomesi
  • UP000059680 Componenti: Chromosome 6

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 977977Probable sucrose-phosphate synthase 3PRO_0000413642Add
BLAST

Proteomic databases

PaxDbiQ67WN8.

Expressioni

Tissue specificityi

Expressed in germinating seeds.1 Publication

Developmental stagei

Esoxpressed in source leaves and sink leaves.1 Publication

Inductioni

Circadian-regulated, with the highest expression 3 hours after the beginning of light period (in 14 hours light/10 hours dark cycle).1 Publication

Interactioni

Subunit structurei

Homodimer or homotetramer.By similarity

Protein-protein interaction databases

STRINGi39947.LOC_Os06g43630.1.

Structurei

3D structure databases

ProteinModelPortaliQ67WN8.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyltransferase 1 family.Curated

Phylogenomic databases

eggNOGiKOG0853. Eukaryota.
COG0438. LUCA.
InParanoidiQ67WN8.

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.

Q67WN8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MYGNDNWINS YLDAILDAGK GAAASASASA VGGGGGAGDR PSLLLRERGH
60 70 80 90 100
FSPARYFVEE VITGYDETDL YKTWLRANAM RSPQEKNTRL ENMTWRIWNL
110 120 130 140 150
ARKKKELEKE EANRLLKRRL ETERPRVETT SDMSEDLFEG EKGEDAGDPS
160 170 180 190 200
VAYGDSTTGN TPRISSVDKL YIVLISLHGL VRGENMELGR DSDTGGQVKY
210 220 230 240 250
VVELAKALSS CPGVYRVDLF TRQILAPNFD RSYGEPVEPL ASTSFKNFKQ
260 270 280 290 300
ERGENSGAYI IRIPFGPKDK YLAKEHLWPF IQEFVDGALS HIVKMSRAIG
310 320 330 340 350
EEISCGHPAW PAVIHGHYAS AGVAAALLSG ALNVPMVFTG HFLGKDKLEE
360 370 380 390 400
LLKQGRQTRE QINMTYKIMC RIEAEELALD ASEIVIASTR QEIEEQWNLY
410 420 430 440 450
DGFEVILARK LRARVKRGAN CYGRYMPRMV IIPPGVEFGH MIHDFDMDGE
460 470 480 490 500
EDGPSPASED PSIWSEIMRF FTNPRKPMIL AVARPYPEKN ITTLVKAFGE
510 520 530 540 550
CRPLRELANL TLIMGNREAI SKMHNMSAAV LTSVLTLIDE YDLYGQVAYP
560 570 580 590 600
KRHKHSEVPD IYRLAVRTKG AFVNVPYFEQ FGVTLIEAAM HGLPVIATKN
610 620 630 640 650
GAPVEIHQVL DNGLLVDPHD QHAIADALYK LLSEKQLWSK CRENGLKNIH
660 670 680 690 700
QFSWPEHCKN YLSRISTLGP RHPAFASNED RIKAPIKGRK HVTVIAVDSV
710 720 730 740 750
SKEDLIRIVR NSIEAARKEN LSGSTGFVLS TSLTIGEIHS LLMSAGMLPT
760 770 780 790 800
DFDAFICNSG SDLYYPSCTG DTPSNSRVTF ALDRSYQSHI EYHWGGEGLR
810 820 830 840 850
KYLVKWASSV VERRGRIEKQ VIFEDPEHSS TYCLAFKVVN PNHLPPLKEL
860 870 880 890 900
QKLMRIQSLR CHALYNHGAT RLSVIPIHAS RSKALRYLSV RWGIELQNVV
910 920 930 940 950
VLVGETGDSD YEELFGGLHK TVILKGEFNT SANRIHSVRR YPLQDVVALD
960 970
SPNIIGIEGY GTDDMRSALK QLDIRAQ
Length:977
Mass (Da):109,462
Last modified:October 11, 2004 - v1
Checksum:i6D6C96A32E37E814
GO

Sequence cautioni

The sequence BAF20095 differs from that shown. Reason: Erroneous gene model prediction. Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP003523 Genomic DNA. Translation: BAD37372.1.
AP003568 Genomic DNA. Translation: BAD37428.1.
AP008212 Genomic DNA. Translation: BAF20095.1. Sequence problems.
AP014962 Genomic DNA. No translation available.
RefSeqiXP_015643380.1. XM_015787894.1.
UniGeneiOs.27130.

Genome annotation databases

GeneIDi4341642.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP003523 Genomic DNA. Translation: BAD37372.1.
AP003568 Genomic DNA. Translation: BAD37428.1.
AP008212 Genomic DNA. Translation: BAF20095.1. Sequence problems.
AP014962 Genomic DNA. No translation available.
RefSeqiXP_015643380.1. XM_015787894.1.
UniGeneiOs.27130.

3D structure databases

ProteinModelPortaliQ67WN8.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi39947.LOC_Os06g43630.1.

Protein family/group databases

CAZyiGT4. Glycosyltransferase Family 4.

Proteomic databases

PaxDbiQ67WN8.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

GeneIDi4341642.

Phylogenomic databases

eggNOGiKOG0853. Eukaryota.
COG0438. LUCA.
InParanoidiQ67WN8.

Enzyme and pathway databases

UniPathwayiUPA00371; UER00545.
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 nameiSPSA3_ORYSJ
AccessioniPrimary (citable) accession number: Q67WN8
Secondary accession number(s): Q0DAM8
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 19, 2011
Last sequence update: October 11, 2004
Last modified: September 7, 2016
This is version 60 of the entry and version 1 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. Oryza sativa (rice)
    Index of Oryza sativa entries and their corresponding gene designations
  3. 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.