Anti-kallikrein B1 antibodies are used for the immunodetection of the protein encoded by the KLKB1 gene. In humans, the canonical protein has a reported length of 638 amino acid residues and a mass of 71.4 kDa. It is known to be a secreted protein. A member of the Peptidase S1 protein family, it is known to be involved with proteolysis. Post-translational modifications have been described, including glycosylation. The gene encoding this protein is implicated in Prekallikrein deficiency. Other names for this target antigen include PKK, PKKD, PPK, plasma kallikrein, kallikrein B, plasma (Fletcher factor) 1, and KLK3. Gene orthologs have been identified in the mouse, rat, bovine, frog and chimpanzee species. A number of kallikrein B1 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA and Immunohistochemistry are also common applications.