quercetin + UDP-alpha-D-glucose <=> quercetin 3-O-beta-D-glucoside + UDP + H(+)
quercetin + udp-alpha-d-glucose <=> quercetin 3-o-beta-d-glucoside + udp + h(+)
quercetin + UDP-alpha-D-glucose <=> quercetin 3-O-beta-D-glucoside + UDP + H(+)
quercetin + udp-alpha-d-glucose <=> quercetin 3-o-beta-d-glucoside + udp + h(+)