Recombinant Human Cytokeratin 16/K16 protein

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Cytokeratin 16 often called K16 or Krt16 weighs around 50 kDa and belongs to the keratin family. Researchers commonly find K16 in epithelial tissues particularly in areas subjected to constant mechanical stress such as palms and soles. In addition to its localized expression K16 appears during wound healing processes where cells experience high turnover or regeneration activities. Its expression often pairs with Krt6 another keratin type contributing to its mechanical properties under stress conditions often called "pressure point".

Biological function summary

K16 plays critical roles in maintaining the integrity of epithelial cells and tissues. It is a structural protein that helps stabilize keratin cytoarchitecture. K16 forms a complex with its partner keratins like K17 providing resilience and elasticity to the skin ensuring durability in regions experiencing repetitive physical stress. Additionally K16 helps regulate proliferation and differentiation of keratinocytes contributing to healthy skin formation and repair.

Pathways

K16 takes part in signaling pathways associated with epidermal development and repair. It acts within the keratinization process interacting closely with signaling components that influence cell cycle regulation and DNA repair. Proteins such as p63 and Krt17 assist this regulatory mechanism influencing cellular responses to stress or damage. These interactions help modulate barrier function and skin homeostasis ensuring responsive adaptation to environmental changes.

K16 links to conditions like psoriasis and pachyonychia congenita. In psoriasis K16 expression becomes markedly upregulated contributing to the characteristic skin hyperproliferation. Similarly in pachyonychia congenita mutations in the K16 gene lead to nail and skin anomalies causing painful epidermal lesions. Both disorders highlight K16's involvement with Krt6 and Krt17 as these proteins collectively demonstrate disrupted keratin networks resulting in compromised skin integrity.