What is the function of keratin?

Keratins are best known for providing strength and resilience to cells that form the hair, skin, and nails. These proteins allow tissues to resist damage from friction and minor trauma, such as rubbing and scratching. read more

Made up of tough, insoluble filaments, keratin is extremely difficult to dissolve and requires a chemical reaction to do so, according to Wikipedia. Keratin is produced by cells called keratinocytes and contains amino acids, a specialized type of protein, according to Teens Health. Keratin can also be found in animal hooves and horns. read more

Keratin filaments are abundant in keratinocytes in the cornified layer of the epidermis; these are proteins which have undergone keratinization. In addition, keratin filaments are present in epithelial cells in general. read more