ID 2.4.1.137 DE sn-glycerol-3-phosphate 2-alpha-galactosyltransferase. AN floridoside-phosphate synthase. CA sn-glycerol 3-phosphate + UDP-alpha-D-galactose = 2-(alpha-D-galactosyl)- CA sn-glycerol 3-phosphate + H(+) + UDP. CC -!- The product is hydrolyzed by a phosphatase to floridoside (cf. CC EC 2.4.1.96). //