Anti-XRN antibodies enable researchers to detect and measure the XRN antigen in biological samples. This target is a reported synonym of the CLCN5 gene, which encodes chloride voltage-gated channel 5. This protein is known to function in endocytosis, among other biological roles. The human version of XRN has a canonical amino acid length of 816 residues and a protein mass of 90.8 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the Golgi and cell membrane of cells. Other names for this target antigen include CLC5, CLCK2, and ClC-5.