Glycosyltransferase that possesses isoflavonoids 4'-O- and 7-O-glucosyltransferase activities (PubMed:27066037). Shows a successive glucosylation toward the acceptors producing their corresponding 4',7-O-diglucosides (PubMed:27066037). Can use genistein, formononetin, daidzein, liquiritigenin and naringenin as substrates (PubMed:27066037). Shows also a 3'-O-glucosylation activity in vitro (PubMed:27066037). Highly expressed in roots. Expressed in leaves and stems. Belongs to the UDP-glycosyltransferase family.