Anti-KIR1D antibodies are used in antigen-specific immunodetection in biological samples. The target KIR1D is a known alias name of the protein killer cell immunoglobulin like receptor, two Ig domains and short cytoplasmic tail 4, encoded by the KIR2DS4 gene in humans. This 304-amino acid residue protein is a known receptor on natural killer (NK) cells for HLA-C alleles. It is localized to the cell membrane of the cell and features glycosylated post-translational modifications. Other synonyms for KIR1D include CD158I and KIR412.