HLA-G Protein, Human (C66S, His-Avi)

HLA-G, a non-classical major histocompatibility class Ib molecule, crucially regulates immunity at the maternal-fetal interface. Partnered with B2M, it forms a complex selectively binding self-peptides, fostering maternal-fetal tolerance through interactions with KIR2DL4, LILRB1, and LILRB2 receptors. Engagement triggers NK cell senescence, induces regulatory T cell differentiation, and balances tolerance and antiviral immunity. HLA-G actively contributes to immune modulation at the maternal-fetal interface, showcasing its multifaceted role in promoting fetal development while maintaining immune balance. HLA-G Protein, Human (C66S, His-Avi) is the recombinant human-derived HLA-G protein, expressed by E. coli , with C-Avi, C-His labeled tag and C66S mutation. The total length of HLA-G Protein, Human (C66S, His-Avi) is 281 a.a., with molecular weight of 36-42 kDa.

HLA-G, a non-classical major histocompatibility class Ib molecule, plays a crucial role in immune regulation at the maternal-fetal interface. In association with B2M/beta-2 microglobulin, it forms a complex that selectively binds a limited repertoire of nonamer self-peptides derived from intracellular proteins, including histones and ribosomal proteins. This peptide-bound HLA-G-B2M complex acts as a ligand for inhibitory/activating KIR2DL4, LILRB1, and LILRB2 receptors on uterine immune cells, fostering fetal development while maintaining maternal-fetal tolerance. Interactions with KIR2DL4 and LILRB1 receptors trigger NK cell senescence-associated secretory phenotype, promoting vascular remodeling and fetal growth during early pregnancy. Moreover, HLA-G's engagement with LILRB2 induces the differentiation of type 1 regulatory T cells and myeloid-derived suppressor cells, actively contributing to the maintenance of maternal-fetal tolerance. Additionally, HLA-G may play a role in balancing tolerance and antiviral immunity by modulating the effector functions of NK cells, CD8+ T cells, and B cells. Furthermore, it negatively regulates NK cell- and CD8+ T cell-mediated cytotoxicity, highlighting its multifaceted role in immune regulation at the maternal-fetal interface.

Immobilized Human HLA-G Free Heavy Chain, His Tag at 2 μg/mL (100 μl/Well) on the. Dose response curve for Anti-HLA-G Antibody, hFc Tag with the EC₅₀ of 25.9 ng/mL determined by ELISA.

Human

E. coli

C-Avi;C-His

P17693 (G25-T305, C66S)

3135  [NCBI]

36-42 kDa

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

Solution

Supplied as a 0.2 μm filtered solution of 20 mM Tris,500 mM NaCl, 20% Glycerol, pH 8.0.

<1 EU/μg, determined by LAL method.

N/A.

Stored at -80°C for 1 year. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping with dry ice.