👉 Collagen is a protein found in animal skin, hair, nails, teeth, and connective tissues. It is responsible for maintaining the structural integrity of these tissues. Collagens are composed of 21 chains of amino acids linked together by disulfide bridges. The structure of a collagen molecule is complex and can vary depending on its type, but it usually contains a number of alpha-helices and beta-sheets arranged in a repeating pattern. Collagen is essential for maintaining the elasticity and
