Promotes matrix assembly. Binds to heparin, dermatan sulfate and chondroitin sulfate. Present in kidney renal tubules (at protein level). Expressed in the developing oropharynx and nasopharynx at 13.5 dpc, in the mandible at 14.5 dpc and in the cartilage primordia of the nasal bones, palate and tooth germs at 17.5 dpc. Detected in the embryonic liver at 13.5, 14.5 and 17.5 dpc.