Fusion protein composition

Fusion protein composition of the antibodies useful Fc region as a medicament effector function is increased is desired. The N- glycoside-linked complex-type oligosaccharide with a composition comprising a fusion protein molecule of the antibody Fc region with the Fc region, fucose N- glycoside-linked complex-type oligosaccharide is the N- acetylglucosamine in the reducing end in the sugar chains providing There fusion protein composition is a carbohydrate unbound transformant producing the fusion protein composition, a pharmaceutical comprising the preparation and the fusion protein composition of the fusion protein composition.