Gallate 1-beta-glucosyltransferase () is an enzyme that catalyzes the chemical reaction
The two substrates of this enzyme characterised from oak leaves are gallic acid and UDP-glucose. Its products are glucogallin and uridine diphosphate (UDP).
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:gallate beta-D-glucosyltransferase. Other names in common use include UDP-glucose-vanillate 1-glucosyltransferase, UDPglucose:vanillate 1-O-glucosyltransferase, and UDPglucose:gallate glucosyltransferase.
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