Anti-DNAJB4 antibodies are used in the immunodetection of the protein DnaJ heat shock protein family (Hsp40) member B4. In humans, the canonical protein has a reported length of 337 amino acid residues and a mass of 37.8 kDa. Its subcellular localization is in the cell membrane and cytoplasm. It is found to be expressed in the heart, pancreas and skeletal muscle, and to a lesser extent in the brain, placenta and liver. DNAJB4 is a suspected chaperone. Synonyms for this target antigen include DNAJW, DjB4, HLJ1, dnaJ homolog subfamily B member 4, DnaJ (Hsp40) homolog, subfamily B, member 4, and CMYP21. DNAJB4 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. A number of DNAJB4 antibodies have been mentioned in research publications and have associated citations. Western Blot is a widely used application for these antibodies. ELISA, Immunofluorescence, and Immunohistochemistry are also common applications.