Flavonol 7-O-beta-glucosyltransferase () is an enzyme that catalyzes the general chemical reaction
UDP-glucose + a flavonol UDP + a flavonol 7-O-β-D-glucoside
The enzyme characterised from Chrysanthemum segetum uses UDP-glucose to transfer a glucose unit to a specific phenolic hydroxy group of a flavonol, giving the corresponding flavonol 7-O-β-D-glucoside, with uridine diphosphate (UDP) as a byproduct. For example, quercetin is converted to quercimeritrin:
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:flavonol 7-O-beta-D-glucosyltransferase. This enzyme is also called UDP-glucose:flavonol 7-O-glucosyltransferase.
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