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Protein

Sucrose synthase 2

Gene

SS2

Organism
Hordeum vulgare (Barley)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

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

Catalytic activityi

NDP-glucose + D-fructose = NDP + sucrose.1 Publication

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionGlycosyltransferase, Transferase

Enzyme and pathway databases

SABIO-RKiP31923

Protein family/group databases

CAZyiGT4 Glycosyltransferase Family 4

Names & Taxonomyi

Protein namesi
Recommended name:
Sucrose synthase 2 (EC:2.4.1.13)
Alternative name(s):
Sucrose-UDP glucosyltransferase 2
Gene namesi
Name:SS2
OrganismiHordeum vulgare (Barley)
Taxonomic identifieri4513 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladePooideaeTriticodaeTriticeaeHordeinaeHordeum

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00002046501 – 816Sucrose synthase 2Add BLAST816

Proteomic databases

PRIDEiP31923

Expressioni

Tissue specificityi

Abundant in developing endosperm, low in aleurone, and undetected in coleoptiles and roots. Also detected in crude extracts of anthers and in immature embryos.2 Publications

Developmental stagei

Activity increases as seeds develop.1 Publication

Gene expression databases

ExpressionAtlasiP31923 baseline and differential

Interactioni

Subunit structurei

Forms homotetramers and heterotetramers with SS1, all three possible heterotetramers are formed.1 Publication

Protein-protein interaction databases

IntActiP31923, 1 interactor

Structurei

3D structure databases

ProteinModelPortaliP31923
SMRiP31923
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni280 – 757GT-B glycosyltransferaseBy similarityAdd BLAST478

Sequence similaritiesi

Phylogenomic databases

eggNOGiKOG0853 Eukaryota
COG0438 LUCA

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

Sequencei

Sequence statusi: Complete.

P31923-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGETAGERAL SRVHSVRERI GHSLSAHTNE LVAVFSRLVN QGKGMLQPHQ
60 70 80 90 100
ITAEYNAAIP EAEREKLKNT PFEDLLRGAQ EAIVIPPWVA LAIRPRPGVW
110 120 130 140 150
EYVRVNVSEL GVEELSVLRY LQFKEQLANG STDNNFVLEL DFGPFNASFP
160 170 180 190 200
RPSLSKSIGN GVQFLNRHLS SKLFHDKESM YPLLNFLRAH NYKGMTMMLN
210 220 230 240 250
DRIRSLGTLQ GALRKAETHL SGLPADTPYT EFHHRFQELG LEKGWGDCAQ
260 270 280 290 300
RASETIHLLL DLLEAPDPSS LEKFLGTIPM VLNVVILSPH GYFAQANVLG
310 320 330 340 350
YPDTGGQVVY ILDQVRAMEN EMLLRIKQQG LDITPKILIV TRMLPDAHGT
360 370 380 390 400
TCGQRLEKVL GTEHTHILRV PFKTEDGIVR KWISRFEVWP YLEAYTDDVA
410 420 430 440 450
HEIAGELQAN PDLIIGNYSD GNLVACLLAH KLGVTHCTIA HALEKTKYPN
460 470 480 490 500
SDLYWKKFED HYHFSCQFTA DLIAMNHADF IITSTFQEIA GNKDTVGQYE
510 520 530 540 550
SHMAFTMPGL YRVVHGIDVF DPKFNIVSPG ADMSIYFPYT EQQKRLTSLH
560 570 580 590 600
TEIEELLFSD VENAEHKFVL KDKKKPIIFS MARLDRVKNM TGLVEMYGRN
610 620 630 640 650
PRLQELVNLV VVCGDHGKVS KDKEEQVEFK KMFDLIEKYN LSGHIRWISA
660 670 680 690 700
QMNRVRNGEL YRYICDMKGA FVQPAFYEAF GLTVIEAMTC GLPTFATAYG
710 720 730 740 750
GPAEIIVNGV SGYHIDPYQN DKASALLVGF FGKCQEDPSH WNKISQGGLQ
760 770 780 790 800
RIEEKYTWKL YSERLMTLSG VYGFWKYVSN LDRRETRRYL EMLYALKYRK
810
MAATVPLAVE GETSGE
Length:816
Mass (Da):92,575
Last modified:July 1, 1993 - v1
Checksum:iCB90A9C42AAB1080
GO

Sequence cautioni

The sequence CAA75793 differs from that shown. Reason: Frameshift at position 789.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti131S → R in CAA75793 (Ref. 2) Curated1
Sequence conflicti196T → A in CAA75793 (Ref. 2) Curated1
Sequence conflicti230T → S in CAA75793 (Ref. 2) Curated1
Sequence conflicti282L → F in CAA75793 (Ref. 2) Curated1
Sequence conflicti437C → G in CAA75793 (Ref. 2) Curated1
Sequence conflicti492N → K in CAA75793 (Ref. 2) Curated1
Sequence conflicti674P → A in CAA75793 (Ref. 2) Curated1
Sequence conflicti729G → D in CAA75793 (Ref. 2) Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X69931 mRNA Translation: CAA49551.1
Y15802 Genomic DNA Translation: CAA75793.1 Frameshift.
PIRiS32451

Similar proteinsi

Entry informationi

Entry nameiSUS2_HORVU
AccessioniPrimary (citable) accession number: P31923
Secondary accession number(s): P83182, Q9ZR49
Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 1993
Last sequence update: July 1, 1993
Last modified: May 23, 2018
This is version 78 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Direct protein sequencing

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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