Review 1 for exam 3 - C h a p te r 7 C a rb o h y d ra te s...

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Chapter 7 Carbohydrates How are carbohydrates linked to polypeptide chains in O-linkages? What are O-linkages? What carbohydrate residue is usually linked to the protein in O-linkages? --hint: see the fig 7.32 and the last line on p 204 and top of p 206 Be able to draw O-linkages (like in fig 7.32) How are carbohydrates linked to polypeptide chains in N-linkages? How are carbohydrates linked to polypeptide chains in N-linkages? What are N-linkages? What cellular location are O-linked saccharides found? What are mucins? What appears to be the functional purpose of the highly glycosylated “stem” of the LDL receptor. Hint see the last sentence on p 206 and fig 7.33 What are some of the functions of N-linked glycosylation? See the last paragraph on p 207 and onto 208 What does the slow cleavage of oligosaccharides from N-linked glycoproteins target the protein for? P 208 What is the role of N-linked oligosaccharides in protein folding? Box on p 209 What are proteoglycans and how do they function in general?
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