a 3-O-{alpha-Neu5Ac-(2->3)-beta-D-Gal-(1->4)-beta-D-GlcNAc-(1->6)-[beta-D-Gal-(1->3)]-alpha-D-GalNAc}-L-threonyl-[protein] + GDP-beta-L-fucose = a 3-O-{alpha-Neu5Ac-(2->3)-beta-D-Gal-(1->4)-[alpha-L-Fuc-(1->3)]-beta-D-GlcNAc-(1->6)-[beta-D-Gal-(1->3)]-alpha-D-GalNAc}-L-threonyl-[protein] + GDP + H(+) — reaction