label: a 1,2-diacyl-3-O-[alpha-D-galactopyranosyl-(1->2)-alpha-D-glucopyranosyl]-sn-glycerol + UDP + H(+) => a 1,2-diacyl-3-O-(alpha-D-glucopyranosyl)-sn-glycerol + UDP-alpha-D-galactose
label_lc: a 1,2-diacyl-3-o-[alpha-d-galactopyranosyl-(1->2)-alpha-d-glucopyranosyl]-sn-glycerol + udp + h(+) => a 1,2-diacyl-3-o-(alpha-d-glucopyranosyl)-sn-glycerol + udp-alpha-d-galactose