Purity: > 95% by SDS - PAGE Format: iquid. In Phosphate Buffered Saline (pH 7.4) containing 10% glycerol. KLRD1, also known as natural killer cells antigen CD94 isoform 1, is expressed on the surface of natural killer cells in the innate immune system. It plays a role as a receptor for the recognition of MHC class I HLA-E molecules by NK cells and some cytotoxic T-cells. This protein can form disulfide-bonded heterodimer with NKG2 family members. CD94 and NKG2 complex interacts with Human Leukocyte Antigen (HLA)-E on target cells on the surface of natural killer cells. Recombinant human KLRD1, fused to His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.