petunidin + UDP-alpha-D-glucose => petunidin 3-O-beta-D-glucoside + UDP
petunidin + udp-alpha-d-glucose => petunidin 3-o-beta-d-glucoside + udp
petunidin + UDP-alpha-D-glucose => petunidin 3-O-beta-D-glucoside + UDP
petunidin + udp-alpha-d-glucose => petunidin 3-o-beta-d-glucoside + udp