KERATIN

Keratin

Keratin is a family of fibrous structural proteins. Keratin is the key structural material making up the outer layer of human skin. It is also the key structural component of hair and nails. Keratin monomers assemble into bundles to form intermediate filaments, which are tough and insoluble and form strong unmineralized tissues found in reptiles, birds, amphibians, and mammals. The only other biological matter known to approximate the toughness of keratinized tissue is chitin.

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keratin

Noun

  1. A protein which hair and nails are comprised of.


The above text is a snippet from Wiktionary: keratin
and as such is available under the Creative Commons Attribution/Share-Alike License.

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