alpha-1,3-Galactosyltransferase (GTB)
alpha-1,3-Galactosyltransferase (GTB) (alpha 1,3GT) catalyzes the synthesis of the xenoantigen or α-galactose (α-Gal) epitope. alpha-1,3-Galactosyltransferase (GTB) transfers galactose from UDP-Gal to type 1 or type 2, αFuc1→2βGal-R (H)-terminating acceptors.