the role of keratin in the skin is outer layer.
what is the role of keratin in the skin?
outer layer
α-keratin synthesis begins near focal adhesions on the cell membrane. there, the keratin filament precursors go through a process known as nucleation, where the keratin precursors of dimers and filaments elongate, fuse, and bundles together. as this synthesis is occurring, the keratin filament precursors are transported by actin fibers in the cell towards the nucleus. there, the alpha-keratin intermediate filaments will collect and form networks of structure dictated by the use of the keratin cell as the nucleus simultaneously degrades. however, if necessary, instead of continuing to grow, the keratin complex will disassemble into non-filamentous keratin precursors that can diffuse throughout the cell cytoplasm. these keratin filaments will be able to be used in future keratin synthesis, either to re-organize the final structure or create a different keratin complex. when the cell has been filled with the correct keratin and structured correctly, it undergoes keratin stabilization and dies, a form of programmed cell death. this results in a fully matured, non-vascular keratin cell. these fully matured, or cornified, alpha-keratin cells are the main components of hair, the outer layer of nails and horns, and the epidermis layer of the skin.
alpha-keratin
hair keratin









































hair keratin is a type of keratin found in hair and nails. there are two types of hair keratin:









































bullet::::- the acidic type i hair keratin









































bullet::::- type i hair keratin 1,









































bullet::::- type i hair keratin 2,









































bullet::::- type i hair keratin 3a,









































bullet::::- type i hair keratin 3b,









































bullet::::- type i hair keratin 4,









































bullet::::- type i hair keratin 5,









































bullet::::- type i hair keratin 6,









































bullet::::- type i hair keratin 7,









































bullet::::- type i hair keratin 8,









































bullet::::- the basic type ii hair keratin.









































bullet::::- type ii hair keratin 1,
hair keratin