What is elastin primarily known for?

Elastin is primarily known for being an elastic, fibrous glycoprotein found in connective tissue. It plays a crucial role in providing elasticity and resilience to various tissues in the body, such as skin, lungs, and blood vessels. This property allows these tissues to stretch and then return to their original shape, which is essential for their proper function. The presence of elastin helps maintain the structural integrity and flexibility of these tissues, enabling them to withstand various mechanical forces while maintaining their shape and function.