Which type of protein is elastin categorized as?

Elastin is categorized as a fibrous protein because it has a specific structure that provides elasticity and resilience to tissues. Fibrous proteins, unlike globular proteins, have elongated and strand-like shapes, which contribute to their functional roles in structural components throughout the body. Elastin is primarily found in connective tissues, such as skin, lungs, and blood vessels, where it allows these tissues to stretch and recoil, maintaining their flexibility and providing support.

The characteristics of fibrous proteins enhance their ability to form strong, elongated structures that are crucial for the integrity and elasticity of tissues. This is particularly important in areas that require a high degree of motion and flexibility, illustrating the fundamental role elastin plays in maintaining the physical properties of tissues.