Functions+of+proteins

The __structure__ of a protein determines its __function__.


 * Contractile proteins** are responsible for movement throughout the body. (muscle contractions)


 * Antibodies**: Specialize proteins that defend the body of foreign invaders called antigens.


 * Enzymes:** Facilitate biochemical reactions and also help to speed them up. Examples of enzymes are lactase and pepsin.


 * Hormonial proteins** are the messenger proteins.


 * Structural proteins** are fibrous and stringy which provides support.


 * Storage proteins** store amino acids. Example: ovalbumin and casein.. ovalbumin is found in egg whites and casein is found in milk-based products.


 * Transport proteins** are carries proteins which move molecules from one place to another.