Biology · Biochemistry
The following statements are made with reference to the characteristics of glycosaminoglycans and proteoglycans, which are major constituents of the extracellular matrix. Which one of them is INCORRECT?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Glycosaminoglycans are very long polysaccharide chains composed of repeating disaccharide units of an amino sugar and a uronic acid.
- 2Except for hyaluronic acid, all glycosaminoglycans are covalently attached to protein as proteoglycans.
- 3Glycoproteins contain less carbohydrate usually in the form of relatively short, branched oligosaccharide chains, whereas proteoglycans contain more carbohydrate in the form of long unbranched glycosaminoglycan chains.
- 4Like O-linked and N-linked glycoproteins, in proteoglycans also glycosaminoglycans are linked to serine or threonine and asparagine residues.✓
Correct answer
Like O-linked and N-linked glycoproteins, in proteoglycans also glycosaminoglycans are linked to serine or threonine and asparagine residues.
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