Fucosylgalactoside 3-Alpha-Galactosyltransferase Activity

UDP-Galactose:alpha-L-Fucosyl-(1->2)-D-Galactoside 3-Alpha-D-Galactosyltransferase Activity

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.