Figure 1.

The reaction was catalyzed by fucosyltransferase 8. Fucosyltransferase 8 transfers an L-fucose reside from GDP-β-L-fucose onto the innermost GDP-fucose to the innermost N-acetylglucosamine of an N-glycan to form an α-1,6 linkage. Fut8: Fucosyltransferase 8.