2.4.1.69 GDP-beta-L-fucose + beta-D-galactosyl-(1->3)-N-acetyl-beta-D-glucosaminyl-R = GDP + alpha-L-fucosyl-(1->2)-beta-D-galactosyl-(1->3)-N-acetyl-beta-D-glucosaminyl-R either a rapid equilibrium random kinetic mechanism or a steady state ordered mechanism with GDP-L-fucose binding first 489343