label: fucosylgalactoside 3-alpha-galactosyltransferase activity
label_lc: fucosylgalactoside 3-alpha-galactosyltransferase activity
description: "Catalysis of the reaction: UDP-galactose + glycoprotein-alpha-L-fucosyl-(1,2)-D-galactose = UDP + glycoprotein-alpha-D-galactosyl-(1,3)-(alpha-L-fucosyl-(1,2))-D-galactose."