Flavonol-3-O-glycoside glucosyltransferase
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
| Flavonol-3-O-glycoside glucosyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.4.1.240 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| |||||||||
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.
References
- 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 (2): 434–43. doi:10.1016/0003-9861(82)90569-0. PMID 6462109.
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