From The School of Biomedical Sciences Wiki
Proteoglycans are large proteins with transmembrane, intra- and extracellular domains and oligosaccharide chains attached to the extracellular domain. They are much larger than glycoproteins. The oligosaccharides form part of the glycocalyx.
- ↑ Alberts B., Johnson A., Lewis J., Raff M., Roberts K., Walter P. 2008. Molecular Biology of the Cell, 5th ed. New York, Garland Science.