Anti-NAPSIN A antibodies enable researchers to detect and measure the NAPSIN A antigen in biological samples. This target is a reported synonym of the NAPSA gene, which encodes napsin A aspartic peptidase. This protein is known to function in proteolysis, among other biological roles. The human version of NAPSIN A has a canonical amino acid length of 420 residues and a protein mass of 45.4 kilodaltons. It is reported to be a secreted protein that is notably expressed in the testis, lung, and kidney. Other names for this target antigen include KAP, KAP, and Kdap. Western Blot is the most common application for the NAPSIN A antibodies listed below. ELISA and Immunohistochemistry are also common applications.