- Source: Flavonol-3-O-glycoside glucosyltransferase
In enzymology, a 3/info/flavonol" target="_blank">flavonol-3-O-glycoside glucosyltransferase (EC 2.4.1.240) is an enzyme that catalyzes the chemical reaction
UDP-glucose + a 3/info/flavonol" target="_blank">flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside
⇌
{\displaystyle \rightleftharpoons }
UDP + a 3/info/flavonol" target="_blank">flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside
Thus, the two substrates of this enzyme are UDP-glucose and [[3/info/flavonol" target="_blank">flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside]], whereas its 3 products are UDP, 3/info/flavonol" target="_blank">flavonol, and [[3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside]].
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:3/info/flavonol" target="_blank">flavonol-3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside 2-O-beta-D-glucosyltransferase.
References
Jourdan PS, Mansell RL (1982). "Isolation and partial characterization of three glucosyl transferases involved in the biosynthesis of 3/info/flavonol" target="_blank">flavonol triglucosides in Pisum sativum L". Arch. Biochem. Biophys. 213 (2): 434–43. doi:10.1016/0003-9861(82)90569-0. PMID 6462109.