Emilin-1 is an extracellular matrix glycoprotein localized at sites where elastin and microfibrils are in proximity. It may be responsible for anchoring smooth muscle cells to elastic fibers. It has cell adhesive capacity. Emilin-1 may have a role in the regulation of blood vessel assembly since it inhibits TGFB signaling by binding specifically to the pro-TGFB precursor and preventing its maturation by furin convertases in the extracellular space. TGFB proteins are the main regulators of blood vessel development and maintenance.
