QSulf1 remodels the 6-O sulfation states of cell surface heparan sulfate proteoglycans to promote Wnt signaling.
Ai X, Do AT, Lozynska O, Kusche-Gullberg M, Lindahl U, Emerson CP. QSulf1 remodels the 6-O sulfation states of cell surface heparan sulfate proteoglycans to promote Wnt signaling. J Cell Biol. 2003 Jul 21; 162(2):341-51.