- Source: Flavonol-3-O-glycoside xylosyltransferase
In enzymology, a 3/info/flavonol" target="_blank">flavonol-3-O-glycoside xylosyltransferase (EC 2.4.2.35) is an enzyme that catalyzes the chemical reaction
UDP-D-xylose + a 3/info/flavonol" target="_blank">flavonol 3-O-glycoside
⇌
{\displaystyle \rightleftharpoons }
UDP + a 3/info/flavonol" target="_blank">flavonol 3-[-D-xylosyl-(1->2)-beta-D-glycoside]
Thus, the two substrates of this enzyme are UDP-D-xylose and 3/info/flavonol" target="_blank">flavonol 3-O-glycoside, whereas its two products are UDP and [[3/info/flavonol" target="_blank">flavonol 3-[-D-xylosyl-(1->2)-beta-D-glycoside]]].
This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is UDP-D-xylose:3/info/flavonol" target="_blank">flavonol-3-O-glycoside 2''-O-beta-D-xylosyltransferase.
References
Wiermann R (1982). "Formation of 3/info/flavonol" target="_blank">flavonol 3-O-diglycosides and 3/info/flavonol" target="_blank">flavonol 3-O-triglycosides by enzyme extracts from anthers of Tulipa cv apeldoorn - characterization and activity of 3 different O-glycosyltransferases during anther development". Z. Naturforsch. C. 37: 587–599.
Ishikura N, Yang ZQ (1991). "UDP-D-xylose: 3/info/flavonol" target="_blank">flavonol 3-O-xylosyltransferase from young leaves of Euonymus alatus f. ciliato-dentatus". Z. Naturforsch. C: Biosci. 46: 1003–1010.
