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Information on EC 2.4.1.173 - sterol 3beta-glucosyltransferase and Organism(s) Arabidopsis thaliana and UniProt Accession Q9M8Z7

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EC Tree
     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.173 sterol 3beta-glucosyltransferase
IUBMB Comments
Not identical with EC 2.4.1.192 (nuatigenin 3beta-glucosyltransferase) or EC 2.4.1.193 (sarsapogenin 3beta-glucosyltransferase).
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This record set is specific for:
Arabidopsis thaliana
UNIPROT: Q9M8Z7
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Word Map
The taxonomic range for the selected organisms is: Arabidopsis thaliana
The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
Synonyms
sterol glucosyltransferase, atg26, ugt80b1, ugt80a2, sgtl1, ugt51, udpg-sgtase, sterol glycosyltransferase, sgtl2, udp-glucose:sterol glucosyltransferase, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
UDP-glucose sterol glucosyltransferase
-
UDP-glucose:sterol glucosyltransferase
-
UGT80A2
AtSGT
-
sterol glucosyltransferase in Arabidopsos thaliana
sterol glucosyltransferase
-
-
-
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sterol-beta-D-glucosyltransferase
-
-
-
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sterol:UDPG glucosyltransferase
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-
-
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UDP-Glc:sterol glucosyltransferase 80B1
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UDP-glucose sterol glucosyltransferase
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UDP-glucose-sterol beta-glucosyltransferase
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-
-
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UDP-glucose-sterol glucosyltransferase
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-
-
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UDPG-SGTase
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-
-
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UDPG:sterol glucosyltransferase
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-
-
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UDPglucose:sterol glucosyltransferase
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-
-
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uridine diphosphoglucose-poriferasterol glucosyltransferase
-
-
-
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uridine diphosphoglucose-sterol glucosyltransferase
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
hexosyl group transfer
-
-
-
-
PATHWAY SOURCE
PATHWAYS
-
-, -
SYSTEMATIC NAME
IUBMB Comments
UDP-glucose:sterol 3-O-beta-D-glucosyltransferase
Not identical with EC 2.4.1.192 (nuatigenin 3beta-glucosyltransferase) or EC 2.4.1.193 (sarsapogenin 3beta-glucosyltransferase).
CAS REGISTRY NUMBER
COMMENTARY hide
123940-38-5
-
9075-00-7
-
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
UDP-glucose + a sterol
UDP + a sterol 3-beta-D-glucoside
show the reaction diagram
UDP-glucose + cholesterol
UDP + cholesterol 3-beta-D-glucoside
show the reaction diagram
UDP-glucose + ergosterol
UDP + ergosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
3beta-hydroxy-16,17alpha-epoxypregnenolone + UDP-alpha-D-glucose
3beta-hydroxy-16,17alpha-epoxypregnenolone 3-beta-D-glucoside + UDP
show the reaction diagram
-
-
-
-
?
3beta-hydroxy-pregna-5,16-dien-20-one + UDP-glucose
UDP + 3beta-20-oxopregna-5,16-dien-3-yl beta-D-glucopyranoside
show the reaction diagram
-
-
-
-
?
5alpha-cholestan-3beta-ol + UDP-glucose
UDP + 3beta,5alpha-cholestan 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
beta-sitosterol + UDP-glucose
UDP + beta-sitosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
brassicasterol + UDP-glucose
UDP + brassicasterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
cholesterol + UDP-glucose
UDP + cholesterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
dehydroepiandrosterone + UDP-glucose
UDP + dehydroepiandrosterone 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
ergosterol + UDP-glucose
UDP + ergosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
pregnenolene + UDP-glucose
UDP + pregnenolone 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
solasodine + UDP-glucose
UDP + solasodine 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
stigmasterol + UDP-glucose
UDP + stigmasterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
UDP-glucose + 3beta-hydroxy-16,17alpha-epoxypregnenolone
UDP + 3beta-hydroxy-16,17alpha-epoxypregnenolone 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
UDP-glucose + a sterol
UDP + a sterol 3-beta-D-glucoside
show the reaction diagram
UDP-glucose + cholesterol
UDP + cholesterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + ergosterol
UDP + ergosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + pregnenolone
UDP + pregnenolone 3-beta-D-glucoside
show the reaction diagram
-
-
-
-
?
UDP-glucose + sitosterol
UDP + sitosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + stigmasterol
UDP + stigmasterol 3-beta-D-glucoside
show the reaction diagram
UDP-glucose + transandrosterone
UDP + transandrosterone 3beta-D-glucoside
show the reaction diagram
-
-
-
-
?
additional information
?
-
-
the enzyme only shows activity with sterols having hydroxyl group at C-3 position. Utilises only UDP-glucose, UDP-galactose cannot serve as the sugar donor.
-
-
?
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
UDP-glucose + a sterol
UDP + a sterol 3-beta-D-glucoside
show the reaction diagram
UDP-glucose + cholesterol
UDP + cholesterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + ergosterol
UDP + ergosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + a sterol
UDP + a sterol 3-beta-D-glucoside
show the reaction diagram
UDP-glucose + cholesterol
UDP + cholesterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + ergosterol
UDP + ergosterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
UDP-glucose + stigmasterol
UDP + stigmasterol 3-beta-D-glucoside
show the reaction diagram
-
-
-
?
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.017
3beta-hydroxy-16,17-alpha-epoxypregnenolene
-
-
0.007
3beta-hydroxy-pregna-5,16-dien-20-one
-
-
0.063
5alpha-Cholestan-3beta-ol
-
-
0.059
beta-sitosterol
-
-
0.03
brassicasterol
-
-
0.056
cholesterol
-
-
0.043
dehydroepiandrosterone
-
-
0.035
ergosterol
-
-
0.008
pregnenolone
-
-
0.003
solasodine
-
-
0.043
stigmasterol
-
-
0.059
transandrosterone
-
-
0.025
UDP-glucose
-
-
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
additional information
UGT80B1:GFP is localized in the hechtian strands, connecting the retracting protoplast from the cell wall. Wild-type exhibits clear cell periphery localization of SCM:GFP in one of the two cell files, differentiating developing H cells from N cells. In ugt80B1 mutants, a decrease in cell peripheral localization of SCM:GFP can be seen, and signal is detected in both H and N cell files indicating a loss in cell-type specific accumulation of SCRAMBLED (SCM). An increase in cytoplasmic punctae labeled with SCM:GFP is visible in both cell files in ugt80B1
-
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
evolution
UGT80 proteins belong to a third family that is hypothesized to be involved in sterol glucoside synthesis, phylogenetic tree of UGT80- and UGT713-related proteins, overview
malfunction
inactivation of UDP-glucose sterol glucosyltransferases enhances Arabidopsis thaliana resistance to Botrytis cinerea infection, which correlates with increased levels of jasmonic acid (JA) and upregulation of two marker genes (PDF1.2 and PR4) of the ERF branch of the JA signaling pathway. Analysis of the response to necrotrophic fungus Botrytis cinerea in an Arabidopsis thaliana mutant that is severely impaired in steryl glycosides biosynthesis due to the inactivation of the two sterol glucosyltransferases, UGT80A2 and UGT80B1. The mutant also accumulates higher levels of camalexin, the major Arabidopsis thaliana phytoalexin, than wild-type plants. Camalexin accumulation correlates with enhanced transcript levels of several cytochrome P450 camalexin biosynthetic genes, as well as of their transcriptional regulators WRKY33, ANAC042, and MYB51, suggesting that the Botrytis-induced accumulation of camalexin is coordinately regulated at the transcriptional level. After fungus infection, the expression of genes involved in the indole glucosinolate biosynthesis is also upregulated at a higher degree in the ugt80A2;B1 mutant than in wild-type plants
metabolism
crosstalk between hormone signaling pathways, particularly those mediated by salicylate and jasmonate, has been found to contribute to plant resistance to different types of pathogens. The results suggest that the salicylate-mediated defense pathway is not involved in the response of the ugt80A2;B1 mutant to Bortrytis cinerea infection. But camalexin and, probably, also indole glucosinolates are actively involved in the enhanced resistance of the ugt80A2;B1 mutant to Bortrytis cinerea infection. The synthesis of alkylglucosinolates in the ugt80A2;B1 mutant is not affected by Bortrytis cinerea infection
physiological function
UGT80A2 accounts for most of the sitosteryl and stigmasteryl glucoside production in seeds
evolution
malfunction
metabolism
crosstalk between hormone signaling pathways, particularly those mediated by salicylate and jasmonate, has been found to contribute to plant resistance to different types of pathogens. The results suggest that the salicylate-mediated defense pathway is not involved in the response of the ugt80A2;B1 mutant to Bortrytis cinerea infection. But camalexin and, probably, also indole glucosinolates are actively involved in the enhanced resistance of the ugt80A2;B1 mutant to Bortrytis cinerea infection. The synthesis of alkylglucosinolates in the ugt80A2;B1 mutant is not affected by Bortrytis cinerea infection
physiological function
additional information
sterol glucosides patterns of wild-type and mutant roots, overview. The ugt80B1 mutant shows a significant reduction in stigmasteryl glucosides only
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
U80A2_ARATH
637
0
69277
Swiss-Prot
Chloroplast (Reliability: 3)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
69000
cloned, calculated molecular mass
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
?
x * 95000, recombinant GFP-tagged enzyme, SDS-PAGE
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
pH STABILITY
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
gel filtration and ion exchange column chromatography
-
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expression in Escherichia coli
gene At3g07020, cDNA library screening, DNA and amino acid sequence determination and analysis, recombinant expression of wild-type and mutant enzymes in Saccharomyces cerevisiae strain YLR189C microsomal fraction, quantitative real-time PCR enzyme expression analysis and gene expression pattern. UGT80A2 expressing cells displays a greater than 100fold increase in cholesteryl glucoside production compared with the negative control
gene UGT80A2, quantitative reverse-transcription PCR expression analysis
expressed in Escherichia coli strain DH5alpha
-
gene At1g43620, cDNA library screening, DNA and amino acid sequence determination and analysis, recombinant expression of wild-type and mutant enzymes in Saccharomyces cerevisiae strain YLR189C microsomal fraction, quantitative real-time PCR enzyme expression analysis and gene expression pattern
gene At5g24750, cDNA library screening, DNA and amino acid sequence determination and analysis, recombinant expression of wild-type and mutant enzymes in Saccharomyces cerevisiae strain YLR189C microsomal fraction, quantitative real-time PCR enzyme expression analysis and gene expression patterns. UGT713B1 displays little or no activity
gene UGT80B1, quantitative reverse-transcription PCR expression analysis
gene UGT80B1, recombinant expression of native promoter and 35 S driven GFP-tagged wild-type and mutant enzymes, the ugt80B1 mutant phenotype is complemented with pro35S:UGT80B1:GFP or with proUGT80B1:UGT80B1:GFP as observed by rescue of the transparent testa phenotype
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Warnecke, D.C.; Baltrusch, M.; Buck, F.; Wolter, F.P.; Heinz, E.
UDP-glucose:sterol glucosyltransferase: cloning and functional expression in Escherichia coli
Plant Mol. Biol.
35
597-603
1997
Arabidopsis thaliana (Q9M8Z7), Avena sativa (O22678), Avena sativa ugt80A1 (O22678)
Manually annotated by BRENDA team
Sharma, L.K.; Madina, B.R.; Chaturvedi, P.; Sangwan, R.S.; Tuli, R.
Molecular cloning and characterization of one member of 3beta-hydroxy sterol glucosyltransferase gene family in Withania somnifera
Arch. Biochem. Biophys.
460
48-55
2007
Arabidopsis thaliana, Withania somnifera (Q2I015), Withania somnifera
Manually annotated by BRENDA team
DeBolt, S.; Scheible, W.R.; Schrick, K.; Auer, M.; Beisson, F.; Bischoff, V.; Bouvier-Nave, P.; Carroll, A.; Hematy, K.; Li, Y.; Milne, J.; Nair, M.; Schaller, H.; Zemla, M.; Somerville, C.
Mutations in UDP-glucose:sterol glucosyltransferase in Arabidopsis cause transparent testa phenotype and suberization defect in seeds
Plant Physiol.
151
78-87
2009
Arabidopsis thaliana (Q9M8Z7)
Manually annotated by BRENDA team
Stucky, D.F.; Arpin, J.C.; Schrick, K.
Functional diversification of two UGT80 enzymes required for steryl glucoside synthesis in Arabidopsis
J. Exp. Bot.
66
189-201
2015
Arabidopsis thaliana (F4KII1), Arabidopsis thaliana (Q9M8Z7), Arabidopsis thaliana (Q9XIG1), Arabidopsis thaliana, Arabidopsis thaliana Col-0 (F4KII1), Arabidopsis thaliana Col-0 (Q9M8Z7), Arabidopsis thaliana Col-0 (Q9XIG1)
Manually annotated by BRENDA team
Castillo, N.; Pastor, V.; Chavez, A.; Arro, M.; Boronat, A.; Flors, V.; Ferrer, A.; Altabella, T.
Inactivation of UDP-glucose sterol glucosyltransferases enhances Arabidopsis resistance to Botrytis cinerea
Front. Plant Sci.
10
1162
2019
Arabidopsis thaliana (Q9M8Z7), Arabidopsis thaliana (Q9XIG1), Arabidopsis thaliana Ws-0 (Q9M8Z7), Arabidopsis thaliana Ws-0 (Q9XIG1)
Manually annotated by BRENDA team
Pook, V.G.; Nair, M.; Ryu, K.; Arpin, J.C.; Schiefelbein, J.; Schrick, K.; DeBolt, S.
Positioning of the SCRAMBLED receptor requires UDP-Glc sterol glucosyltransferase 80B1 in Arabidopsis roots
Sci. Rep.
7
5714
2017
Arabidopsis thaliana (Q9XIG1), Arabidopsis thaliana Col-0 (Q9XIG1)
Manually annotated by BRENDA team