Gelatin is a protein derived from which structural protein?

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Gelatin comes from collagen, a structural protein that provides tensile strength to connective tissues like skin, bones, and tendons. Collagen’s long fibers are broken down through heat and hydrolysis to form gelatin, which then forms gels when cooled. Keratin is the protein in hair and nails, elastin gives elasticity, and myosin is a motor protein in muscle, none of which are the source of gelatin.