Anti-C9orf140 antibodies enable researchers to detect and measure the C9orf140 antigen in biological samples. This target is a reported synonym of the SAPCD2 gene, which encodes suppressor APC domain containing 2. This protein is known to function in the regulation of cell proliferation, among other biological roles. The human version of C9orf140 has a canonical amino acid length of 394 residues and a protein mass of 42.6 kilodaltons. It is reported to be localized in the cell membrane, nucleus, and cytoplasm of cells and notably expressed in many tissues, such as the appendix, urinary bladder, and adipose tissue.