Anti-CNO antibodies enable researchers to detect and measure the CNO antigen in biological samples. This target is a reported synonym of the BLOC1S4 gene, which encodes biogenesis of lysosomal organelles complex 1 subunit 4. This protein is known to function in neuronal development, among other biological roles. The human version of CNO has a canonical amino acid length of 217 residues and a protein mass of 23.4 kilodaltons. It is reported to be localized in the cytoplasm of cells and widely expressed in many tissue types. Other names for this target antigen include BCAS4L and BLOS4.