CD8+ T cells are essential components of the immune system. They function through TCR recognition of antigens (peptide epitopes) presented by the class I MHC (HLA in humans) molecules. Thus, TCR recognition of cognate MHC/peptide complex can be utilized for the detection of antigen-specific CD8+ T cells. Due to the intrinsic low affinity of MHC/TCR interaction, the detection of antigen specific T cells requires enhanced binding avidity by multimerization of MHC/peptide monomers, ensuring the interaction of multiple MHC/TCR simultaneously. This can be accomplished by using streptavidin to tetramerize biotinylated MHC class I complexes.In the absence of proper peptide binding, the HLA class I complex will quickly disassociate. Flex-T™ UVX (Ultraviolet Exchange) monomer is designed as a biotinylated α-chain, associated with the β2-microglobulin chain, and stabilized by a UV-labile peptide. The C-terminus of the α-chain is site-specifically biotinylated by the enzyme BirA. When the complex (monomer) is irradiated with UV in the presence of a new peptide with proper affinity, it will result in a net peptide exchange. The new peptide replaces the pre-loaded UV-labile peptide and forms a new MHC monomer. The new monomers can be then tetramerized and used for labeling antigen-specific T cells or other studies.
Product Details Biolegend揭示出对神经系统以及影响神经系统的疾病的更好理解的研究可以转化为改善数百万生命的治疗方法。BioLegend提供广泛的产品组合，为您的神经科学实验提供解决方案，包括抗体，免疫测定溶液，重组蛋白，磁性细胞分离和单细胞蛋白质组学试剂。我们的试剂是与该领域的杰出领导者（如迈克尔·J·福克斯基金会）合作建造的（请参见下面的“产品亮点”标签），这表明我们承诺与您的团队合作寻找新发现，为我们的客户带来新的选择和全面的解决方案研究神经系统疾病的解决方案。
