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#glycoproteins

2 public questions tagged with this topic.

Cell Communication and ECM

Proteoglycans differ from glycoproteins mainly in having

Long unbranched GAG chains, is consistent with established principles of cell signaling, receptor pharmacology and cellular regulation. Experimental measurements of binding parameters, genetic loss-of-function studies and pharmacological interventions all converge on the same interpretation. Related options address neighboring concepts but do not satisfy the precise criterion stated in the question.

Ref: NCERT Biology Class 11–12 Alberts et al Molecular Biology of the Cell Lodish et al, Molecular Cell Biology Cooper & Hausman, The Cell Abbas et al., Cellular and Molecular Immunology (for immunology sections)

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Carbohydrates

What distinguishes proteoglycans from glycoproteins?

Proteoglycans have larger carbohydrate content accurately describes the key difference, similarity, or comparative feature asked about in this question. In Carbohydrates, the ability to compare and contrast related concepts is essential for deeper understanding. The distinguishing feature described by Proteoglycans have larger carbohydrate content reflects fundamental differences in structure, function, mechanism, or origin between the compared entities. The other options (Glycoproteins contain sulfated sugars, Proteoglycans do not have glycosidic bonds, and Glycoproteins are always intracellular) either state incorrect comparisons, confuse the properties of the entities being compared, or describe features that are actually shared rather than different.

Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 7

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