an anthocyanidin 3-O-beta-D-glucoside + UDP-alpha-D-xylose <=> an anthocyanidin 3-O-beta-D-sambubioside + UDP + 2 H(+)
an anthocyanidin 3-o-beta-d-glucoside + udp-alpha-d-xylose <=> an anthocyanidin 3-o-beta-d-sambubioside + udp + 2 h(+)
an anthocyanidin 3-O-beta-D-glucoside + UDP-alpha-D-xylose <=> an anthocyanidin 3-O-beta-D-sambubioside + UDP + 2 H(+)
an anthocyanidin 3-o-beta-d-glucoside + udp-alpha-d-xylose <=> an anthocyanidin 3-o-beta-d-sambubioside + udp + 2 h(+)