Access

News and Views

Nature Cell Biology 10, 761–763 (1 July 2008) | doi:10.1038/ncb0708-761

Opposing roles for glypicans in Hedgehog signalling

Dong Yan & Xinhua Lin

Heparan sulphate proteoglycans (HSPGs) are cell surface and extracellular matrix proteins that are expressed in most, if not all, animal cells. They are composed of a protein core to which heparan sulphate glycosaminoglycan (GAG) chains are attached.