Keratins are a family of fibrous protein; tough and insoluble, they form the hard but mineral structures found in reptiles, birds, amphibians and mammals....
production of small proline-rich (SPRR) proteins and transglutaminase
Transglutaminase
Transglutaminases are a family of enzymes that catalyze the formation of a covalent bond between a free amine group and the gamma-carboxamid group of protein- or peptide-bound glutamine.... which eventually form a cornified cell envelope beneath the plasma membrane
terminal differentiation
loss of nuclei and organelles, in the final stages of cornification metabolism ceases and the cells are completely filled by keratin
Keratins are a family of fibrous protein; tough and insoluble, they form the hard but mineral structures found in reptiles, birds, amphibians and mammals....