Removes sulfate groups from chondroitin-4-sulfate (C4S) and regulates its degradation . Involved in the regulation of cell adhesion, cell migration and invasion in colonic epithelium . In the central nervous system, is a regulator of neurite outgrowth and neuronal plasticity, acting through the control of sulfate glycosaminoglycans and neurocan levels (By similarity).
Subcellular locations: Lysosome, Cell surface