Anti-SIPP1 antibodies enable researchers to detect and measure the SIPP1 antigen in biological samples. This target is a reported synonym of the WBP11 gene, which encodes WW domain binding protein 11. This protein is known to function in mRNA processing and RNA splicing, among other biological roles. The human version of SIPP1 has a canonical amino acid length of 641 residues and a protein mass of 70 kilodaltons. It is reported to be localized in the nucleus and cytoplasm of cells and widely expressed in many tissue types. Other names for this target antigen include BUG13, CFAP90, and FAP90.