Synthetic pathway of fucosylated N-glycans and GDP-fucose via the de novo and the salvage pathway. PMM phosphomannomutase, MPG mannose-1-phosphate guanylyltransferase (GDP-mannose pyrophosphorylase), FX GDP-4-keto-6-deoxymannose-3,5-epimerase-4-reductase (GDP-L-fucose synthase), FUK fucose kinase, FPGT fucose-1-phophate guanylyltransferase