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In enzymology, a gallate 1-beta-glucosyltransferase (EC 2.4.1.136) is an enzyme that catalyzes the chemical reaction

UDP-glucose + gallate UDP + 1-galloyl-beta-D-glucose

Thus, the two substrates of this enzyme are UDP-glucose and gallate, whereas its two products are UDP and 1-galloyl-beta-D-glucose.

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.

References

• Gross GG (1982). "Synthesis of beta-glucogallin from UDP-glucose and gallic acid by an enzyme preparation from oak leaves". FEBS Lett. 148: 67–70. doi:10.1016/0014-5793(82)81244-1.
• Gross GG (1983). "Partial-purification and properties of UDP-glucose-vanillate 1-O-glucosyl transferase from oak leaves". Phytochemistry. 22 (10): 2179–2182. doi:10.1016/S0031-9422(00)80141-7.