KEGG   ENZYME: 2.4.2.35
Entry
EC 2.4.2.35                 Enzyme                                 

Name
flavonol-3-O-glycoside xylosyltransferase;
UDP-D-xylose:flavonol-3-O-glycoside 2''-O-beta-D-xylosyltransferase
Class
Transferases;
Glycosyltransferases;
Pentosyltransferases
Sysname
UDP-alpha-D-xylose:flavonol-3-O-glycoside 2''-O-beta-D-xylosyltransferase
Reaction(IUBMB)
UDP-alpha-D-xylose + a flavonol 3-O-glycoside = UDP + a flavonol 3-[beta-D-xylosyl-(1->2)-beta-D-glycoside] [RN:R03268]
Reaction(KEGG)
R03268 > R06811 R06814
Substrate
UDP-alpha-D-xylose [CPD:C00190];
flavonol 3-O-glycoside
Product
UDP [CPD:C00015];
flavonol 3-[beta-D-xylosyl-(1->2)-beta-D-glycoside] [CPD:C04069]
Comment
Flavonol 3-O-glucoside, flavonol 3-O-galactoside and, more slowly, rutin, can act as acceptors.
History
EC 2.4.2.35 created 1986, modified 2014
Pathway
ec00944  Flavone and flavonol biosynthesis
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 37:587-599 (1982)
Other DBs
ExplorEnz - The Enzyme Database: 2.4.2.35
IUBMB Enzyme Nomenclature: 2.4.2.35
ExPASy - ENZYME nomenclature database: 2.4.2.35
BRENDA, the Enzyme Database: 2.4.2.35
CAS: 83380-90-9
LinkDB

KEGG   REACTION: R06814
Entry
R06814                      Reaction                               

Name
UDP-D-xylose:flavonol-3-O-glycoside 2''-O-beta-D-xylosyltransferase
Definition
Quercetin 3-O-glucoside + UDP-D-xylose <=> Quercetin 3-O-[beta-D-xylosyl-(1->2)-beta-D-glucoside] + UDP
Equation
Comment
flavonol-3-O-glycoside xylosyltransferase
Reaction class
RC00005  C00015_C00190
RC00049  C05623_C12637
Enzyme
Pathway
rn00944  Flavone and flavonol biosynthesis
LinkDB

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