Anthocyanidin 3-O-glucosyltransferase

UDP-D-glucose + an anthocyanidin $rightleftharpoons$ 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.

References

• Kamsteeg J, van Brederode J, van Nigtevecht G "Identification and properties of UDP-glucose: cyanidin-3-O-glucosyltransferase isolated from petals of the red campion (Silene dioica)". Biochem. Genet. 16 1045–58.
• Ford CM, Boss PK, Hoj PB "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 9224–33.
• Nakajima J, Tanaka Y, Yamazaki M, Saito K "Reaction mechanism from leucoanthocyanidin to anthocyanidin 3-glucoside, a key reaction for coloring in anthocyanin biosynthesis". J. Biol. Chem. 276 25797–803.

External links

The CAS registry number for this enzyme class is .

Gene Ontology (GO) codes