Reaction catalyzed by phenol beta-glucosyltransferase (2.4.1.35)

+

=

+

+

+

UDP-alpha-D-glucose

+

quercetin

=

UDP

+

quercetin 3'-O-beta-D-glucoside

+

quercetin 7-O-beta-D-glucoside

+

quercetin 7,3'-di-O-beta-D-glucoside