KIR3DL3 (Killer Cell Immunoglobulin Like Receptor, Three Ig Domains And Long Cytoplasmic Tail 3) is a Protein Coding gene. KIR3DL3 is a framework gene of the Leukocyte Receptor Complex, present in all individuals and haplotypes analyzed to date.KIR3DL3 alleles were characterized by two families and one unrelated individual. The most centromeric gene in the human KIR cluster is KIR3DL3. The encoded protein belongs to the immunoglobulin superfamily. KIR3DL3 has only one immunoreceptor tyrosine-based inhibitory motif and lacks the exon encoding the stem between the Immunoglobulin domains and the transmembrane region. KIR3DL3 gene is not a pseudogene but encodes a protein that is not expressed in healthy individuals. Protein expression might be induced under certain developmental or pathological situations.