Takes part in the salvage pathway for reutilization of fucose from the degradation of oligosaccharides. Has strong fucokinase activity. Has very weak fucokinase activity. ATP + L-fucose = ADP + beta-L-fucose 1-phosphate + H(+) Isoform 1: Expressed strongly in brain, ovary and testis, moderately in kidney and liver, and weakly in lung, spleen and heart. Isoform 2: Expressed very strongly in brain, strongly in ovary, testis and kidney, moderately in lung and liver, and weakly in heart and spleen. Belongs to the GHMP kinase family. Truncated N-terminus.