An adhesion molecule that interacts with extracellular matrix molecules in developing teeth and may play important roles in differentiation and maintenance of odontoblasts as well as in dentin formation. Interacts with heparin, FBLN1, FN1 and DSPP. Preferentially binds dental mesenchyme cells and odontoblasts but not dental epithelial cells or nondental cells. Binding requires a heparan sulfate-containing receptor on the cell surface as well as an integrin (By similarity). N-glycosylated. Belongs to the fibulin family.