种属
Human
表达宿主
HEK293 cells
描述
Recombinant Human SLAMF2/CD48 Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Gln27-Ser220) of human CD48/SLAMF2/BCM1 (Accession #NP_001769.2) fused with a 6×His tag at the C-terminus.
标签
C-His
纯度
> 95% by SDS-PAGE.
内毒素
< 0.1 EU/μg of the protein by LAL method.
生物活性
Measured by its binding ability in a functional ELISA. Immobilized recombinant human CD48 at 5 μg/mL (100 μL/well) can bind recombinant human CD244 with a linear range of 0.2-1 μg/mL.
制剂
Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.
储存
Store the lyophilized protein at -20°C to -80 °C for long term.
After reconstitution, the protein solution is stable at -20 °C for 3 months, at 2-8 °C for up to 1 week.未开盖的干粉蛋白在 -20°C至-80°C可保存12个月；
复溶之后，蛋白溶液在-20°C及以下可保存3个月，在2-8℃可保存1周。
After reconstitution, the protein solution is stable at -20 °C for 3 months, at 2-8 °C for up to 1 week.未开盖的干粉蛋白在 -20°C至-80°C可保存12个月；
复溶之后，蛋白溶液在-20°C及以下可保存3个月，在2-8℃可保存1周。
复溶
Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid votex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.收到重组蛋白产品之后请检查蛋白冻干粉末是否贴于瓶底，如果粉末浮起，开盖之前请先低温离心。将蛋白用说明书中指定的缓冲液复溶至0.1-0.5 mg/mL（请注意蛋白复溶浓度不能低于0.1 mg/mL），室温平衡5-10 min保证充分溶解，复溶过程中请不要剧烈涡旋及吹打蛋白溶液。如需长期储存，建议复溶时添加载体蛋白或者稳定剂（如0.1% BSA, 5% HSA, 10% FBS 或者 5% 海藻糖），同时将复溶后的蛋白溶液按照需求进行分装，储存于-20°C至-80°C，随取随用，避免反复冻融。
研究方向
SLAMF2/CD48 蛋白是一种糖基磷脂酰肌醇 (GPI) 锚定的细胞表面糖蛋白，通过其 N 端免疫球蛋白结构域与细胞表面受体（如 2B4/CD244 或 CD2）相互作用，在免疫细胞调节和激活中发挥关键作用。在T细胞信号转导中，SLAMF2与CD2结合，促进Src家族蛋白激酶LCK和LAT有效招募至TCR/CD3复合物，从而促进LCK磷酸化和随后的激活。此外，SLAMF2 诱导 CD244 的细胞质免疫受体酪氨酸开关基序 (ITSM) 磷酸化，启动一系列信号传导事件，最终形成免疫突触，并通过 T 淋巴细胞和颗粒酶直接释放含有穿孔素和颗粒酶的溶细胞颗粒。NK 细胞。值得注意的是，SLAMF2 直接与 CD2、CD244 和 LCK 相互作用，突显其在免疫细胞功能和信号通路中的复杂参与。
背景信息
This protein is a member of the CD2 subfamily of immunoglobulin-like receptors which includes SLAM (signaling lymphocyte activation molecules) proteins. The encoded protein is found on the surface of lymphocytes and other immune cells, dendritic cells and endothelial cells, and participates in activation and differentiation pathways in these cells. The encoded protein does not have a transmembrane domain, however, but is held at the cell surface by a GPI anchor via a C-terminal domain which maybe cleaved to yield a soluble form of the receptor. Multiple transcript variants encoding different isoforms have been found for this gene.