Anti-BBLN antibodies are used in the immunodetection of the protein bublin coiled coil protein. In humans, the canonical protein has a reported length of 83 amino acid residues and a mass of 9.1 kDa. Its subcellular localization is in the cell junctions and cytoplasm. A member of the UPF0184 (EST00098) protein family, BBLN is known to be important for intermediate filament organization in intestinal cells, interacts with intermediate filament and regulates intestinal lumen morphology. Synonyms for this target antigen include UPF0184 protein C9orf16. BBLN gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.