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Protein

Probable sucrose-phosphate synthase 2

Gene

SPS2

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 2 (EC:2.4.1.14)
Alternative name(s):
Sucrose phosphate synthase 2F
Short name:
OsSPS2F
UDP-glucose-fructose-phosphate glucosyltransferase
Gene namesi
Name:SPS2
Ordered Locus Names:Os02g0184400, LOC_Os02g09170
ORF Names:OJ1572_F02.13, OsJ_05652
OrganismiOryza sativa subsp. japonica (Rice)
Taxonomic identifieri39947 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladeOryzoideaeOryzeaeOryzinaeOryza
Proteomesi
  • UP000059680 Componenti: Chromosome 2

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 963963Probable sucrose-phosphate synthase 2PRO_0000413641Add
BLAST

Proteomic databases

PaxDbiB7F7B9.
PRIDEiB7F7B9.

PTM databases

iPTMnetiB7F7B9.

Expressioni

Tissue specificityi

Expressed in germinating seeds.1 Publication

Developmental stagei

Expressed in source leaves and sink leaves.1 Publication

Inductioni

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

Gene expression databases

ExpressionAtlasiB7F7B9. baseline and differential.
GenevisibleiB7F7B9. OS.

Interactioni

Subunit structurei

Homodimer or homotetramer.By similarity

Protein-protein interaction databases

STRINGi39947.LOC_Os02g09170.1.

Structurei

3D structure databases

ProteinModelPortaliB7F7B9.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the glycosyltransferase 1 family.Curated

Phylogenomic databases

eggNOGiKOG0853. Eukaryota.
COG0438. LUCA.
HOGENOMiHOG000009685.
InParanoidiB7F7B9.
OrthoDBiEOG093600RM.

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.

B7F7B9-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAGNDNWINS YLDAILDAGK AAIGGDRPSL LLRERGHFSP ARYFVEEVIT
60 70 80 90 100
GYDETDLYKT WLRANAMRSP QERNTRLENM TWRIWNLARK KKEFEKEEAC
110 120 130 140 150
RLLKRQPEAE KLRTDTNADM SEDLFEGEKG EDAGDPSVAY GDSTTGSSPK
160 170 180 190 200
TSSIDKLYIV LISLHGLVRG ENMELGRDSD TGGQVKYVVE LAKALSSSPG
210 220 230 240 250
VYRVDLLTRQ ILAPNFDRSY GEPTEMLVST SFKNSKQEKG ENSGAYIIRI
260 270 280 290 300
PFGPKDKYLA KEHLWPFIQE FVDGALGHIV RMSKTIGEEI GCGHPVWPAV
310 320 330 340 350
IHGHYASAGI AAALLSGSLN IPMAFTGHFL GKDKLEGLLK QGRHSREQIN
360 370 380 390 400
MTYKIMCRIE AEELSLDASE IVIASTRQEI EEQWNLYDGF EVILARKLRA
410 420 430 440 450
RVKRGANCYG RYMPRMVIIP PGVEFGHIIH DFEMDGEEEN PCPASEDPPI
460 470 480 490 500
WSQIMRFFTN PRKPMILAVA RPYPEKNITS LVKAFGECRP LRELANLTLI
510 520 530 540 550
MGNREAISKM NNMSAAVLTS VLTLIDEYDL YGQVAYPKHH KHSEVPDIYR
560 570 580 590 600
LAARTKGAFV NVAYFEQFGV TLIEAAMNGL PIIATKNGAP VEINQVLNNG
610 620 630 640 650
LLVDPHDQNA IADALYKLLS DKQLWSRCRE NGLKNIHQFS WPEHCKNYLS
660 670 680 690 700
RILTLGPRSP AIGGKQEQKA PISGRKHIIV ISVDSVNKED LVRIIRNTIE
710 720 730 740 750
VTRTEKMSGS TGFVLSTSLT ISEIRSLLVS AGMLPTVFDA FICNSGSNIY
760 770 780 790 800
YPLYSGDTPS SSQVTPAIDQ NHQAHIEYRW GGEGLRKYLV KWATSVVERK
810 820 830 840 850
GRIERQIIFE DPEHSSTYCL AFRVVNPNHL PPLKELRKLM RIQSLRCNAL
860 870 880 890 900
YNHSATRLSV VPIHASRSQA LRYLCIRWGI ELPNVAVLVG ESGDSDYEEL
910 920 930 940 950
LGGLHRTVIL KGEFNIPANR IHTVRRYPLQ DVVALDSSNI IGIEGYSTDD
960
MKSALQQIGV LTQ
Length:963
Mass (Da):107,986
Last modified:October 19, 2011 - v2
Checksum:i610BC79E8459A805
GO

Sequence cautioni

The sequence BAF08022 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.Curated
The sequence BAH00517 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP004066 Genomic DNA. Translation: BAD25068.1.
AP008208 Genomic DNA. Translation: BAF08022.2. Different initiation.
AP014958 Genomic DNA. Translation: BAS77334.1.
CM000139 Genomic DNA. Translation: EEE56455.1.
AK121486 mRNA. Translation: BAH00517.1. Different initiation.
RefSeqiXP_015626343.1. XM_015770857.1.
UniGeneiOs.22727.

Genome annotation databases

EnsemblPlantsiOS02T0184400-02; OS02T0184400-02; OS02G0184400.
OS02T0184400-03; OS02T0184400-03; OS02G0184400.
GeneIDi4328527.
GrameneiOS02T0184400-02; OS02T0184400-02; OS02G0184400.
OS02T0184400-03; OS02T0184400-03; OS02G0184400.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP004066 Genomic DNA. Translation: BAD25068.1.
AP008208 Genomic DNA. Translation: BAF08022.2. Different initiation.
AP014958 Genomic DNA. Translation: BAS77334.1.
CM000139 Genomic DNA. Translation: EEE56455.1.
AK121486 mRNA. Translation: BAH00517.1. Different initiation.
RefSeqiXP_015626343.1. XM_015770857.1.
UniGeneiOs.22727.

3D structure databases

ProteinModelPortaliB7F7B9.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi39947.LOC_Os02g09170.1.

Protein family/group databases

CAZyiGT4. Glycosyltransferase Family 4.

PTM databases

iPTMnetiB7F7B9.

Proteomic databases

PaxDbiB7F7B9.
PRIDEiB7F7B9.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiOS02T0184400-02; OS02T0184400-02; OS02G0184400.
OS02T0184400-03; OS02T0184400-03; OS02G0184400.
GeneIDi4328527.
GrameneiOS02T0184400-02; OS02T0184400-02; OS02G0184400.
OS02T0184400-03; OS02T0184400-03; OS02G0184400.

Phylogenomic databases

eggNOGiKOG0853. Eukaryota.
COG0438. LUCA.
HOGENOMiHOG000009685.
InParanoidiB7F7B9.
OrthoDBiEOG093600RM.

Enzyme and pathway databases

UniPathwayiUPA00371; UER00545.
BRENDAi2.4.1.14. 4460.

Gene expression databases

ExpressionAtlasiB7F7B9. baseline and differential.
GenevisibleiB7F7B9. OS.

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 nameiSPSA2_ORYSJ
AccessioniPrimary (citable) accession number: B7F7B9
Secondary accession number(s): A0A0P0VFM9, Q6H881
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 19, 2011
Last sequence update: October 19, 2011
Last modified: September 7, 2016
This is version 51 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. 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.