a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + UDP + H(+) => a 1,2-diacyl-sn-glycerol + UDP-alpha-D-galactose
a 1,2-diacyl-3-o-(beta-d-galactosyl)-sn-glycerol + udp + h(+) => a 1,2-diacyl-sn-glycerol + udp-alpha-d-galactose
a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + UDP + H(+) => a 1,2-diacyl-sn-glycerol + UDP-alpha-D-galactose
a 1,2-diacyl-3-o-(beta-d-galactosyl)-sn-glycerol + udp + h(+) => a 1,2-diacyl-sn-glycerol + udp-alpha-d-galactose