Which of the Following is NOT a Role of Proteoglycan

Question

Which of the following is NOT a role of proteoglycan?
A)attracting large numbers of cations
B)attracting large numbers of anions
C)maintaining a hydrated extracellular matrix
D)growth factor binding

Accepted Answer

Proteoglycans are known to attract large numbers of cations due to the negatively charged sulfated glycosaminoglycan (GAG) chains attached to the protein core. They also play a crucial role in maintaining a hydrated extracellular matrix and binding growth factors. However, they do not attract large numbers of anions.