Proteoglycan

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Proteoglycans are a class of Glycoprotein. Proteoglycans have a specific structure, for example they have at least one Glycosaminoglycan (GAG)[1] chain covalently attached to their main protein, they also tend to have a much higher Carbohydrate content than ordinary glycoproteins. One of the main roles of proteoglycans involves adding structure to a variety of things. They can also act as lubricants[2].

References

  1. Lodish H., Berk A., Kaiser CA. (2008) Molecular Cell Biology, 7th edition, New York: W.H. Freeman and Company page:951
  2. Berg JM., Tymoczko JL., Stryer L. (2012) Biochemistry, 7th edition, New York: W.H. Freeman and Company page: 339-340
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