Animation showing how glycoproteins are produced within cells.
The transfer of N-glycan chains begins during the assembly of the protein
itself in a cellular organelle called endoplasmic reticulum (ER). On its way to
its destination, the glycoprotein transits through another cellular structure
called Golgi apparatus, where it is further decorated in by the addition of
more carbohydrates. The same protein produced in different cell types usually
carry distinct carbohydrate chains.