Keratin 3

Keratin 3 also known as "cytokeratin 3" is a protein that in humans is encoded by the "KRT3" gene. Keratin 3 is a type II cytokeratin. It is specifically found in the corneal epithelium together with keratin 12.
Mutations in the KRT3 encoding this protein have been associated with Meesmanns Corneal Dystrophy.