Flavonol-3-O-glycoside glucosyltransferase

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In enzymology, a flavonol-3-O-glycoside glucosyltransferase (EC 2.4.1.240) is an enzyme that catalyzes the chemical reaction

UDP-glucose + a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside UDP + a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside

Thus, the two substrates of this enzyme are UDP-glucose and [[flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside]], whereas its 3 products are UDP, flavonol, and [[3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside]].

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-glucose:flavonol-3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside 2-O-beta-D-glucosyltransferase.

[edit] References

• IUBMB entry for 2.4.1.240
• BRENDA references for 2.4.1.240 (Recommended.)
• PubMed references for 2.4.1.240
• PubMed Central references for 2.4.1.240
• Google Scholar references for 2.4.1.240
• Jourdan PS, Mansell RL (1982). "Isolation and partial characterization of three glucosyl transferases involved in the biosynthesis of flavonol triglucosides in Pisum sativum L". Arch. Biochem. Biophys. 213: 434–43. PMID 6462109. 

[edit] External links

• IUBMB entry for 2.4.1.240

• KEGG entry for 2.4.1.240

• BRENDA entry for 2.4.1.240

• NiceZyme view of 2.4.1.240

• EC2PDB: PDB structures for 2.4.1.240

• PRIAM entry for 2.4.1.240

• PUMA2 entry for 2.4.1.240

• IntEnz: Integrated Enzyme entry for 2.4.1.240

• MetaCyc entry for 2.4.1.240

• Atomic-resolution structures of enzymes belonging to this class