Reaction: UDP-glucose + 5,7,3',4'-tetrahydroxyflavone = UDP + 7-O-β-D-glucosyl-5,7,3',4'-tetrahydroxyflavone
See diagram for reaction on apigenin or luteolin.
Other name(s): UDP-glucose—apigenin β-glucosyltransferase; UDPglucose-luteolin β-D-glucosyltransferase; uridine diphosphoglucose-luteolin glucosyltransferase; uridine diphosphoglucose-apigenin 7-O-glucosyltransferase; UDP-glucosyltransferase (ambiguous)
Systematic name: UDP-glucose:5,7,3',4'-tetrahydroxyflavone 7-O-β-D-glucosyltransferase
Comments: A number of flavones, flavanones and flavonols can function as acceptors. Different from EC 2.4.1.91 (flavonol 3-O-glucosyltransferase).
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 37332-50-6
References:
1. Sutter, A., Ortmann, R. and Grisebach, H. Purification and properties of an enzyme from cell suspension cultures of parsley catalyzing the transfer of D-glucose from UDP-D-glucose to flavonoids. Biochim. Biophys. Acta 258 (1972) 71-87. [PMID: 5058406]