Anti-nuclear pore complex interacting protein family member B3 antibodies are used for the immunodetection of the protein encoded by the NPIPB3 gene. In humans, the canonical protein has a reported length of 1050 amino acid residues and a mass of 116.8 kDa. Its subcellular localization is in the membrane. Alternative splicing is reported to yield 6 different isoforms for this protein. It is a member of the NPIP protein family. Other names for this target antigen include NPIP, NPIPB5, NPIPL3, LOW QUALITY PROTEIN: nuclear pore complex-interacting protein family member B3, and KIAA0220L.