Anti-PBX homeobox 4 antibodies are used for the immunodetection of the protein encoded by the PBX4 gene. In humans, the canonical protein has a reported length of 374 amino acid residues and a mass of 40.9 kDa. Its subcellular localization is in the nucleus. A member of the TALE/PBX homeobox protein family, it is known to be involved with organ morphogenesis and brain development. Other names for this target antigen include homeobox protein PBX4, pre-B-cell leukemia homeobox 4, and pre-B-cell leukemia transcription factor 4. Gene orthologs have been identified in the mouse, rat, bovine, zebrafish, chimpanzee and chicken species. A number of PBX homeobox 4 antibodies have been mentioned in research publications and have associated citations. Immunohistochemistry is a widely used application for these antibodies. ELISA, Western Blot, and Immunofluorescence are also common applications.