How is keratin similar to other biomolecules?

Keratin is similar to other biomolecules in that it is a protein composed of amino acids linked by peptide bonds, much like enzymes and antibodies. It exhibits specific structural properties, including alpha-helices and beta-sheets, which are common features in many proteins that determine their function. Additionally, keratin, like other biomolecules, plays critical roles in biological systems, providing structural support and protection in tissues such as skin, hair, and nails. Its stability and resilience are akin to other fibrous proteins like collagen and elastin.