Anti-PIG1 antibodies enable researchers to detect and measure the PIG1 antigen in biological samples. This target is a reported synonym of the NUFIP2 gene, which encodes nuclear FMR1 interacting protein 2. This protein is known to bind RNA. The human version of PIG1 has a canonical amino acid length of 695 residues and a protein mass of 76.1 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the nucleus and cytoplasm of cells.