There are many different keratin proteins normally expressed in the human integumentary system. Mutations in keratin proteins in the skin can cause disease.
Of note, other structural proteins in the epidermis of the skin that are closely related to keratins may also cause disease if mutated. Examples include:
Defective protein | Conditions(s) |
---|---|
Loricrin | Vohwinkel syndrome [nb 1] Progressive symmetric erythrokeratodermia |
Filaggrin | Ichthyosis vulgaris Atopic dermatitis |
Reticular pigmented anomaly of the flexures is a fibrous anomaly of the flexures or bending parts of the axillae, neck and inframammary/sternal areas. It is an autosomal-dominant pigmentary disorder that may appear in adolescence or adulthood. This condition is due to mutations in structural/desmosomal proteins found within stratified squamous epithelium.