• Many proteins rely on the ability to recognize the shape of specific molecules in order to function correctly. The flexible arms of antibodies protect the body from disease by recognizing and binding to foreign molecules and thus preventing the viral RNA or DNA to enter the cell. Collagen forms a strong triple helix that is used throughout the body for structural Support. The calcium pump moves lons across cell membranes allowing the synchronized contraction of muscle cells. The hormone insulin is a small, stable protein that can easily maintain its shape while traveling through the blood to regulate blood sugar levels. Alpha amylase is an enzyme with a catalytic site that begins the breakdown of carbohydrates in our saliva. Ferritin forms a hollow shell that stores iron from our food