Kaempferol 3-O-galactosyltransferase

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In enzymology, a kaempferol 3-O-galactosyltransferase (EC is an enzyme that catalyzes the chemical reaction

UDP-galactose + kaempferol UDP + kaempferol 3-O-beta-D-galactoside

Thus, the two substrates of this enzyme are UDP-galactose and kaempferol, whereas its two products are UDP and kaempferol 3-O-beta-D-galactoside.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:kaempferol 3-O-beta-D-galactosyltransferase. This enzyme is also called F3GalTase.


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  • Miller KD, Guyon V, Evans JN, Shuttleworth WA, Taylor LP (1999). "Purification, cloning, and heterologous expression of a catalytically efficient flavonol 3-O-galactosyltransferase expressed in the male gametophyte of Petunia hybrida". J. Biol. Chem. 274: 34011&ndash, 9. PMID 10567367.

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