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]]. Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins This article is about the Enzyme Commission codes For the European Commission system for coding chemicals see EC-No. Enzymes are Biomolecules that catalyze ( ie increase the rates of Chemical reactions Almost all enzymes are Proteins Catalysis is the process in which the rate of a Chemical reaction is increased by means of a Chemical substance known as a catalyst A chemical reaction is a process that always results in the interconversion of Chemical substances The substance or substances initially involved in a chemical reaction are called Uridine diphosphate glucose ( uracil-diphosphate glucose, UDP-glucose) is a Nucleotide sugar. A product is a substance that forms as a result of a Biological - or Chemical reaction. Uridine diphosphate, abbreviated UDP, is a Nucleotide. It is an Ester of Pyrophosphoric acid with the Nucleoside Uridine Flavonols (with an "o"are a class of Flavonoids that use the 3-hydroxyflavone backbone (3-hydroxy-2-phenylchromen-4-one (IUPAC
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. Glycosyltransferases are Enzymes ( EC 24) that act as a Catalyst for the transfer of a Monosaccharide unit from an activated sugar Phosphate 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
- 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.
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