Anti-KRTAP19-1 antibodies are used in the immunodetection of the protein keratin associated protein 19-1. In humans, the canonical protein has a reported length of 90 amino acid residues and a mass of 9 kDa. It is notably expressed in the upper portion of the hair cortex. It is a member of the KRTAP type 19 protein family. Synonyms for this target antigen include high tyrosine-glycine keratin-associated protein 19.1.