The flavonol 3-O-glucoside/galactoside (1->2) glucosyltransferase activity of a plant or plant part.
Source:
SOY:001
Comment
Catalysis of the reaction: UDP-glucose + a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucoside = UDP + a flavonol 3-O-beta-D-glucosyl-(1->2)-beta-D-glucosyl-(1->2)-beta-D-glucoside.