In enzymology, a flavonol 7-O-beta-glucosyltransferase is an enzyme that catalyzes the chemical reaction UDP-glucose + a flavonol ⇌ {\displaystyle \rightleftharpoons } UDP + a flavonol 7-O-beta-D-glucosideThus, the two substrates of this enzyme are UDP-glucose and flavonol, whereas its two products are UDP and flavonol 7-O-beta-D-glucoside. Wikipedia