Anthocyanidin 3-O-glucosyltransferase

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In enzymology, an anthocyanidin 3-O-glucosyltransferase (EC is an enzyme that catalyzes the chemical reaction

UDP-D-glucose + an anthocyanidin UDP + an anthocyanidin-3-O-beta-D-glucoside

Thus, the two substrates of this enzyme are UDP-D-glucose and anthocyanidin, whereas its two products are UDP and anthocyanidin-3-O-beta-D-glucoside.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-D-glucose:anthocyanidin 3-O-beta-D-glucosyltransferase. Other names in common use include uridine diphosphoglucose-anthocyanidin 3-O-glucosyltransferase, UDP-glucose:anthocyanidin/flavonol 3-O-glucosyltransferase, UDP-glucose:cyanidin-3-O-glucosyltransferase, UDP-glucose:anthocyanidin 3-O-D-glucosyltransferase, and 3-GT. This enzyme participates in flavonoid biosynthesis.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
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  • Google Scholar references for
  • Kamsteeg J, van Brederode J, van Nigtevecht G (1978). "Identification and properties of UDP-glucose: cyanidin-3-O-glucosyltransferase isolated from petals of the red campion (Silene dioica)". Biochem. Genet. 16: 1045&ndash, 58. PMID 751640.
  • Ford CM, Boss PK, Hoj PB (1998). "Cloning and characterization of Vitis vinifera UDP-glucose:flavonoid 3-O-glucosyltransferase, a homologue of the enzyme encoded by the maize Bronze-1 locus that may primarily serve to glucosylate anthocyanidins in vivo". J. Biol. Chem. 273: 9224&ndash, 33. PMID 9535914.
  • Nakajima J, Tanaka Y, Yamazaki M, Saito K (2001). "Reaction mechanism from leucoanthocyanidin to anthocyanidin 3-glucoside, a key reaction for coloring in anthocyanin biosynthesis". J. Biol. Chem. 276: 25797&ndash, 803. PMID 11316805.

External links

The CAS registry number for this enzyme class is 65607-32-1.

Gene Ontology (GO) codes