galactosyltransferase which catalyzes the transfer from udp-galactose to either endogeneous glycoproteins , free n-acetylglucosamine or n-acetylglucosaminyl residues in the carbohydrate portion of glycoproteins , or to glucose when alpha-lactalbumin is added , occurs in human milk fat globule membranes .
C0002287
alpha-lactalbumin
C0086418
human