One of three specific glucosyltransferases in pea (Pisum sativum) thatsuccessively add a β-D-glucosyl group first to O-3 of kaempferol, and then to O-2 of the previously added glucosyl group giving the 3-O-sophoroside and then the 3-O-sophorotrioside (see also EC 126.96.36.199 flavonol 3-O-glucosyltransferase, and EC 188.8.131.52 flavonol-3-O-glucoside glucosyltransferase).
Jourdan, P.S. and Mansell, R.L. Isolation and partial characterization of three glucosyl transferases involved in the biosynthesis of flavonol triglucosides in Pisum sativum L. Arch. Biochem. Biophys.213 (1982) 434–443. [DOI] [PMID: 6462109]