Anti-HISPPD1 antibodies enable researchers to detect and measure the HISPPD1 antigen in biological samples. This target is a reported synonym of the PPIP5K2 gene, which encodes diphosphoinositol pentakisphosphate kinase 2. This protein is known to function in protein phosphorylation, among other biological roles. The human version of HISPPD1 has a canonical amino acid length of 1243 residues and a protein mass of 140.4 kilodaltons, although 2 isoforms have been identified. It is reported to be localized in the cytoplasm of cells and notably expressed in many tissues, such as the appendix and colon. Other names for this target antigen include CFAP160 and DFNB100.