¹ Source: wiktionary.com
Definition of Keratins
1. keratin [n] - See also: keratin
Medical Definition of Keratins
1. Group of highly insoluble fibrous proteins (of high _ helical content) which are found as constituents of the outer layer of vertebrate skin and of skin related structures such as hair, wool, hoof and horn, claws, beaks and feathers. Extracellular keratins are derived from cytokeratins, a large and diverse group of intermediate filament proteins. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Keratins
Literary usage of Keratins
Below you will find example usage of this term as found in modern and/or classical literature:
1. A Text-book of Physiological Chemistry for Students of Medicine and Physicians by Charles Edmund Simon (1907)
"The keratins.—Formerly the keratins were classed with the ... Analysis of some
keratins has given the following results : „ . ..."
2. A Text-book of Physiological Chemistry by Olof Hammarsten, Sven Gustaf Hedin (1914)
"The shell membrane of the hen's egg, and the eggshells of amphibians and certain
fishes are, as above mentioned, ordinarily classified as keratins. ..."
3. Manual of Chemistry: A Guide to Lectures and Laboratory Work for Beginners by William Simon (1916)
"keratins occur as the principal constituents of the horny portion of the skin and
... The keratins contain proportionately more sulphur than other proteins, ..."
4. Practical organic and bio-chemistry by Robert Henry Aders Plimmer (1920)
"keratins. The keratins form the hard structure of hair, nails, feathers, horn,
... The keratins, when they have been dried, are hygroscopic substances and ..."
5. Animal Proteins by Hugh Garner Bennett (1921)
"Albumins and keratins give a precipitate, gelatins do not. Another distinguishing
reaction ... Albumins give a violet colour, keratins and gelatins do not. ..."
Other Resources:
Galician