Drosophila Heparan Sulfate 6-O-Endosulfatase Sulf1 Facilitates Wingless (Wg) Protein Degradation. - Kleinschmit, Adam; Takemura, Masahiko; Dejima, Katsufumi; Pui Yee Choi; Nakato, Hiroshi (Journal of Biological Chemistry, 2013)