Binds EGFR, the EGF receptor, inducing EGFR autophosphorylation and the activation of downstream signaling pathways. May play a role in cell adhesion and migration. May function as a negative regulator of chondrocyte differentiation. In the olfactory epithelium, it may regulate glial cell migration, differentiation and the ability of glial cells to support neuronal neurite outgrowth. Interacts with ECM1. Interacts with TIMP3. Localizes to the lamina propria underneath the olfactory epithelium. Expressed by olfactory ensheathing cells (at protein level). Detected in lung, intestine and kidney. Belongs to the fibulin family.