Flavonol-3-O-glucoside L-rhamnosyltransferase

UDP-L-rhamnose + a flavonol 3-O-D-glucoside $rightleftharpoons$ UDP + a flavonol 3-O-[beta-L-rhamnosyl-(1->6)-beta-D-glucoside]

Thus, the two substrates of this enzyme are UDP-L-rhamnose and flavonol 3-O-D-glucoside, whereas its two products are UDP and flavonol 3-O-[beta-L-rhamnosyl-(1->6)-beta-D-glucoside].

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-L-rhamnose:flavonol-3-O-D-glucoside 6''-O-L-rhamnosyltransferase. Other names in common use include uridine diphosphorhamnose-flavonol 3-O-glucoside, rhamnosyltransferase, and UDP-rhamnose:flavonol 3-O-glucoside rhamnosyltransferase. This enzyme participates in flavonoid biosynthesis.

References

• Wiermann R "Formation of flavonol 3-O-diglycosides and flavonol 3-O-triglycosides by enzyme extracts from anthers of Tulipa cv apeldoorn - characterization and activity of 3 different O-glycosyltransferases during anther development". Z. Natursforsch. C: Biosci. 37 587–599.
• Jones P, Messner B, Nakajima J, Schaffner AR, Saito K "UGT73C6 and UGT78D1, glycosyltransferases involved in flavonol glycoside biosynthesis in Arabidopsis thaliana". J. Biol. Chem. 278 43910–8.

External links

The CAS registry number for this enzyme class is .

Gene Ontology (GO) codes