Anti-KRTAP4-6 antibodies are used in the immunodetection of the protein keratin associated protein 4-6. In humans, the canonical protein has a reported length of 205 amino acid residues and a mass of 21.8 kDa. It is reported to be expressed in the hair follicles. It is a member of the KRTAP type 4 protein family. Synonyms for this target antigen include keratin-associated protein 4.6, ultrahigh sulfur keratin-associated protein 4.15, and keratin associated protein 4-15.