Anti-FSAPA antibodies enable researchers to detect and measure the FSAPA antigen in biological samples. This target is a reported synonym of the U2SURP gene, which encodes U2 snRNP associated SURP domain containing. The human version of FSAPA has a canonical amino acid length of 1029 residues and a protein mass of 118.3 kilodaltons, although 3 isoforms have been identified. It is reported to be localized in the nucleus of cells and widely expressed in many tissue types. Other names for this target antigen include SR140 and U2 snRNP-associated SURP motif-containing protein. Indicated applications for FSAPA antibodies listed below include ELISA, Western Blot, Immunofluorescence, and Immunohistochemistry.