At which position(s) are modified sugars found in this glycan structure? ***Choo

Question

At which position(s) are modified sugars found in this glycan structure?

***Choose one or more:****

A. 6 and 10

B. 7 and 11

C. 1, 2, 5, and 9

D. 3, 4, and 8

Part 2---The structure shown above is an N-linked glycan. What characteristic(s) of the structure confirm it as an N-linked glycan rather than an O-linked glycan?

***Choose one or more: ***

A. The oligosaccharide is linked to the glycoprotein by a glycosidic bond with an asparagine residue.

B. The monosaccharide linked directly to the amino acid is N-acetylglucosamine.

C. The terminal residues are N-acetylneuraminic acid.

D. The structure contains a core group composed of N-acetylglucosamine and mannose in a specific arrangement characteristic of N-linked glycans.

Explanation / Answer

1. Opt B and C

1,2,5,7,9 and 11 are having structures square and dimonds

Square and dimonds are modified sugars.where are circles are unmodified sugars.

Part 2 question answer is A.

The oligosaccharide is linked to the glycoprotein by glycosidic bond with an arpargine residue then is called a N linked glyacn. In the figure the oligosaccharide is attached to aspargine (asn)

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