Which of the Following Statements About N-Glycosylation of Proteins Is

question 56

Multiple Choice

Which of the following statements about N-glycosylation of proteins is not true:

• A) The oligosaccharide contains both mannose (Man) and N-acetyl- glucosamine (GlcNac) residues.
• B) The oligosaccharide is built up on the protein beginning with attachments of GlcNac to asparagine and subsequent additions of either GlcNac or Man residues from the corresponding UDP sugars.
• C) The transfer is made from a lipid intermediate called dolichol.
• D) Transfer occurs within the endoplasmic reticulum.
• E) The biosynthesis of dolichol-PP-oligosaccharide is inhibited by tunicamycin.

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