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. Author manuscript; available in PMC: 2020 Jan 1.
Published in final edited form as: Methods Enzymol. 2018 Sep 22;614:239–261. doi: 10.1016/bs.mie.2018.08.021

Figure 1. N- and O-linked carbohydrates are two common modifications found on cell surface, secreted, Golgi and ER proteins.

Figure 1.

Above, the structure of a glucosamine residue linked through an Asn residue to the protein and common N-glycan forms. Below, an O-GalNAc glycan linked through a Thr residue. Core structures, shown in cartoon forms, are often modified beyond the composition shown here.