Anti-KATNIP antibodies are used in the immunodetection of the protein katanin interacting protein. In humans, the canonical protein has a reported length of 1618 amino acid residues and a mass of 180.9 kDa. Its subcellular localization is in the cytoplasm. It is notably widely expressed in many tissue types. KATNIP is believed to influence the stability of microtubules (MT), possibly through interaction with the MT-severing katanin complex. The KATNIP gene has been associated with the disease, Joubert syndrome. Synonyms for this target antigen include JBTS26 and KIAA0556. KATNIP gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species.