Entry
Name
flavonol-3-O-glycoside xylosyltransferase;
UDP-D-xylose:flavonol-3-O-glycoside 2''-O-beta-D-xylosyltransferase
Class
Transferases;
Glycosyltransferases;
Pentosyltransferases
BRITE hierarchy
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)
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
ExPASy - ENZYME nomenclature database: 2.4.2.35