Catalyzes alpha-1,3 glycosidic linkages of N-glycans (PubMed:11382750). Plays a role in neuronal development by promoting ventral nerve cord formation, possibly by promoting interactions between migrating cells and the extracellular matrix or by promoting neural activity (PubMed:21203496). GDP-beta-L-fucose + N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-beta-D-GlcNAc}-L-asparaginyl-[protein] = GDP + H(+) + N(4)-{beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->3)-[beta-D-GlcNAc-(1->2)-alpha-D-Man-(1->6)]-beta-D-Man-(1->4)-beta-D-GlcNAc-(1->4)-[(1->4)-alpha-L-Fuc]-beta-D-GlcNAc}-L-asparaginyl-[protein] Protein modification; protein glycosylation. Membrane-bound form in trans cisternae of Golgi. Defective alpha-1,3-fucosylation activity and a significantly lower longitudinal length-to-width ratio of the ventral nerve cord (VNC). Belongs to the glycosyltransferase 10 family.