What is "fibrillin"

n. A glycoprotein present in human skin, necessary for forming the elastic fibres in connective tissue.

Fibrillin is a glycoprotein, which is essential for the formation of elastic fibers found in connective tissue. Fibrillin is secreted into the extracellular matrix by fibroblasts and becomes incorporated into the insoluble microfibrils, which appear to provide a scaffold for deposition of elastin.