Seems to mediate adhesion by cell surface integrin binding. May serve as a communication link between the dermal fibroblast cell surface and its extracellular matrix environment. Enhances TGFB1 activity. Inhibits cell proliferation. Accelerates collagen fibril formation, and stabilizes collagen fibrils against low-temperature dissociation. Interacts with TGFB1, DCN and collagen. Expressed in skeletal muscle, heart, pancreas, skin and cultured fibroblasts. Sulfated on tyrosine residue(s). Belongs to the dermatopontin family.