NKG2D/CD314 Protein, Human (Biotinylated, HEK293, His-Avi)

The NKG2D/CD314 protein serves as a key activating and costimulatory receptor in immune surveillance, binding to multiple stress-inducing ligands on tumor and virus-infected cells. It plays a dual role by stimulating NK cells and enhancing T cell activation in CD8(+) T cell-mediated adaptive responses. NKG2D/CD314 Protein, Human (Biotinylated, HEK293, His-Avi) is the recombinant human-derived NKG2D/CD314 protein, expressed by HEK293 , with N-His, N-Avi labeled tag. The total length of NKG2D/CD314 Protein, Human (Biotinylated, HEK293, His-Avi) is 139 a.a., with molecular weight of ~19.0 kDa.

NKG2D/CD314 protein operates as an activating and costimulatory receptor essential for immunosurveillance, binding to diverse cellular stress-inducible ligands presented on autologous tumor cells and virus-infected cells. It plays a dual role in innate immune responses, stimulating both activating killer (NK) cells and acting as a costimulatory receptor for T-cell receptors (TCR) in CD8(+) T-cell-mediated adaptive immune responses, enhancing T-cell activation. The receptor facilitates perforin-mediated elimination of ligand-expressing tumor cells, and its signaling cascades involve calcium influx, ultimately leading to TNF-alpha expression. Additionally, NKG2D/CD314 participates in NK cell-mediated bone marrow graft rejection and may regulate the differentiation and survival of NK cells. Its ligand-binding capacity extends to various subfamilies of MHC class I-related glycoproteins, including MICA, MICB, RAET1E, RAET1G, RAET1L/ULBP6, ULBP1, ULBP2, ULBP3 (ULBP2>ULBP1>ULBP3), and ULBP4. The protein forms homodimers through disulfide linkage and heterohexamers with HCST/DAP10 subunits, a crucial interaction for NK cell surface expression and cytotoxicity induction. Furthermore, it can establish disulfide-bonded heterodimers with CD94 and interacts with CEACAM1, recruiting PTPN6 for VAV1 dephosphorylation, while not interacting with TYROBP.

Measured by its binding ability in a functional ELISA. When immobilized Biotinylated Human NKG2D His at 1 μg/mL (100μL/Well), Anti-NKG2D Antibody hFc binds with an EC₅₀ of 4.4 ng/mL.

Human

HEK293

N-His;N-Avi

P26718 (F78-V216)

100528032  [NCBI]

Approximately 19.0 kDa

Greater than 95% as determined by Tris-Bis PAGE.

Lyophilized powder.

Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4. Normally 5% trehalose is added as protectant before lyophilization.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O.

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.