keratin intermediate filament. protein that is one of the main components of human skin, hair and nails. 3d rendering based on

pdb3tnu keratin keratine intermediate filament epithelium keratinocyte epidermis coiled coil skin epidermolysis bullosa simplex alpha helix hair fiber fibrous structural nail structure peptide protein amino acid molecule polypeptide polymer atoms science scientific disease health molecular model 3d rendering illustration ball stick black background sphere ballandstick