Anti-CK4 antibodies enable researchers to detect and measure the CK4 antigen in biological samples. This target is a reported synonym of the KRT4 gene, which encodes keratin 4. This protein is known to function in cytoskeleton organization and epithelial cell differentiation, among other biological roles. The human version of CK4 has a canonical amino acid length of 520 residues and a protein mass of 56.1 kilodaltons. It is reported to be notably expressed in the vagina, tonsil, oral mucosa, esophagus, and cervix. This target antigen may also be known as CYK4. Western Blot is a widely used application for the CK4 antibodies listed below. In addition, Immunohistochemistry is also a common application.