KRT40
Developmental stage
During differentiation of the hair, it is one of the last keratins expressed.
Function
May play a role in late hair differentiation.
Sequence Similarities
Belongs to the intermediate filament family.
Tissue Specificity
Expressed in skin and scalp. Also very weakly expressed in tongue, breast, colon and small intestine. In the hair follicle, it is specifically present in the upper hair cuticle. Not present in the upper cortex (at protein level).
Alternative names
KA36, KRT40, Cytokeratin-40, Keratin-40, Type I hair keratin Ka36, CK-40, K40