Flavonol-3-O-triglucoside O-coumaroyltransferase

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In enzymology, a flavonol-3-O-triglucoside O-coumaroyltransferase (EC 2.3.1.173) is an enzyme that catalyzes the chemical reaction

4-coumaroyl-CoA + a flavonol 3-O-[beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside] CoA + a flavonol 3-O-[6-(4-coumaroyl)-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)- beta-D-glucoside]

The 3 substrates of this enzyme are 4-coumaroyl-CoA, flavonol, and [[3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside]], whereas its 4 products are CoA, flavonol, [[3-O-[6-(4-coumaroyl)-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-]], and beta-D-glucoside].

This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups. The systematic name of this enzyme class is 4-coumaroyl-CoA:flavonol-3-O-[beta-D-glucosyl-(1->2)-beta-D-glucosid e] 6-O-4-coumaroyltransferase.

[edit] References

• IUBMB entry for 2.3.1.173
• BRENDA references for 2.3.1.173 (Recommended.)
• PubMed references for 2.3.1.173
• PubMed Central references for 2.3.1.173
• Google Scholar references for 2.3.1.173
• Saylor MH, Mansell RL (1977). "Hydroxycinnamoyl: coenzyme A transferase involved in the biosynthesis of kaempferol-3-(p-coumaroyl triglucoside) in Pisum sativum". Z. Naturforsch. [C]. 32: 764–8. PMID 145116. 

[edit] External links

• IUBMB entry for 2.3.1.173

• KEGG entry for 2.3.1.173

• BRENDA entry for 2.3.1.173

• NiceZyme view of 2.3.1.173

• EC2PDB: PDB structures for 2.3.1.173

• PRIAM entry for 2.3.1.173

• PUMA2 entry for 2.3.1.173

• IntEnz: Integrated Enzyme entry for 2.3.1.173

• MetaCyc entry for 2.3.1.173

• Atomic-resolution structures of enzymes belonging to this class