KEGG   ENZYME: 2.4.1.91Help
Entry
EC 2.4.1.91                 Enzyme                                 

Name
flavonol 3-O-glucosyltransferase;
GTI;
uridine diphosphoglucose-flavonol 3-O-glucosyltransferase;
UDP-glucose:flavonol 3-O-glucosyltransferase;
UDPG:flavonoid-3-O-glucosyltransferase
Class
Transferases;
Glycosyltransferases;
Hexosyltransferases
BRITE hierarchy
Sysname
UDP-glucose:flavonol 3-O-D-glucosyltransferase
Reaction(IUBMB)
UDP-glucose + a flavonol = UDP + a flavonol 3-O-beta-D-glucoside [RN:R03267]
Reaction(KEGG)
Substrate
UDP-glucose [CPD:C00029];
flavonol [CPD:C01495]
Product
UDP [CPD:C00015];
flavonol 3-O-beta-D-glucoside [CPD:C03946]
Comment
Acts on a variety of flavonols, including quercetin and quercetin 7-O-glucoside. Different from EC 2.4.1.81 (flavone 7-O-beta-glucosyltransferase).
History
EC 2.4.1.91 created 1976
Pathway
Flavone and flavonol biosynthesis
Metabolic pathways
Biosynthesis of secondary metabolites
Orthology
K10757  
flavonol 3-O-glucosyltransferase
Genes
ATH: 
AT5G17050(UGT78D2)
ALY: 
CRB: 
EUS: 
Taxonomy
Reference
1
  Authors
Kleinehollenhorst, G., Behrens, H., Pegels, G., Srunk, N. and Wiermann, R.
  Title
Formation of flavonol 3-O-diglycosides and flavonol 3-O-triglycosides by enzyme extracts from anthers of Tulipa cv apeldoorn - characterization and activity of 3 different O-glycosyltransferases during anther development.
  Journal
Z. Natursforsch. C: Biosci. 37 (1982) 587-599.
Reference
2  [PMID:4731963]
  Authors
Sutter A, Grisebach H.
  Title
UDP-glucose: flavonol 3-0-glucosyltransferase from cell suspension cultures of parsley.
  Journal
Biochim. Biophys. Acta. 309 (1973) 289-95.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
50812-18-5

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