Question

Draw the structure of the mannose trisaccharide that is part of the core N-linked oligosaccharide.

Short answer

Three mannoses are linked by glycosidic linkages (α (1 →6) α (1 →3)) and β (1 →4) linkage form the N-linked glycoprotein N-Acetyl glucosamine (Glc NAc)

Step-by-step solution

Mannose trisaccharide

First Mannose is linked by α (1 →6) glycosidic linkage with another third mannose. Second mannose is linked with α (1 →3) with third mannose and form trisaccharide.

N-linked oligosaccharide

N-acetyl glucosamine (GlcNAc) is a monosaccharide glucose and amide derivative. It involved the cross-linking of the peptides and create structural bonding. This diagram forms the β (1 →4) linkage with mannose.

Mannose trisaccharide is linked by β (1 →4) linkage to the glycoprotein N-Acetyl glucosamine.