May play a role in intercellular signaling and in connecting cells with the extracellular matrix. May take part in the regulation of cell motility, growth and differentiation. Binds hyaluronan. Interacts with FBLN1. Disappears after the cartilage development. Phosphorylated by FAM20C in the extracellular medium. Belongs to the aggrecan/versican proteoglycan family.