Fucosyltransferase 4 (alpha (1,3) fucosyltransferase, myeloid-specific), also known as FUT4, is an enzyme which in humans is encoded by the FUT4gene.
The product of this gene transfers fucose to N-acetyllactosamine polysaccharides to generate fucosylated carbohydrate structures. It catalyzes the synthesis of the non-sialylated antigen, Lewis x (CD15).
^Couillin P, Mollicone R, Grisard MC, Gibaud A, Ravisé N, Feingold J, Oriol R (1991). "Chromosome 11q localization of one of the three expected genes for the human alpha-3-fucosyltransferases, by somatic hybridization". Cytogenet. Cell Genet. 56 (2): 108–11. doi:10.1159/000133061. PMID1672847.
^Reguigne I, James MR, Richard CW, Mollicone R, Seawright A, Lowe JB, Oriol R, Couillin P (1994). "The gene encoding myeloid alpha-3-fucosyl-transferase (FUT4) is located between D1 1S388 and D11S919 on 11q21". Cytogenet. Cell Genet. 66 (2): 104–6. doi:10.1159/000133677. PMID8287679.