May affect the rate of fibrils formation. Binds to type I and type II collagen, fibronectin and TGF-beta. Forms a ternary complex with MFAP2 and ELN. Interacts with DPT (By similarity). The attached glycosaminoglycan chain can be either chondroitin sulfate or dermatan sulfate depending upon the tissue of origin. Belongs to the small leucine-rich proteoglycan (SLRP) family. SLRP class I subfamily.