Anti-PIK3AP1 antibodies are used in the immunodetection of the protein phosphoinositide-3-kinase adaptor protein 1. In humans, the canonical protein has a reported length of 805 amino acid residues and a mass of 90.4 kDa. Its subcellular localization is in the cell membrane and cytoplasm. Up to 3 different isoforms have been reported for this protein. It is reported to be expressed in natural killer (NK) cells. PIK3AP1 is reported to be a signaling adapter that contributes to B-cell development by linking B-cell receptor (BCR) signaling to the phosphoinositide 3-kinase (PI3K)-Akt signaling pathway. Synonyms for this target antigen include B cell adaptor protein, B-cell adapter for phosphoinositide 3-kinase, B-cell phosphoinositide 3-kinase adapter protein 1, and phosphoinositide 3-kinase adapter protein 1. PIK3AP1 gene orthologs have been reported in the mouse, rat, bovine, frog, zebrafish, chimpanzee and chicken species. Some PIK3AP1 antibodies may have been used in research and have associated citations. Western Blot is a widely used application for these antibodies. Flow Cytometry and Immunofluorescence are also common applications.