研究方向
EpCAM/TROP1 蛋白作为一个关键实体出现，有可能充当物理同源相互作用分子，促进粘膜上皮的肠上皮细胞 (IEC) 和上皮内淋巴细胞 (IEL) 之间的直接接触，从而有助于建立免疫屏障作为抵抗粘膜感染的主要防御措施。除了在粘膜免疫中的作用之外，这种蛋白质在胚胎干细胞的增殖和分化中也发挥着重要作用。它还通过上调 FABP5、MYC 以及细胞周期蛋白 A 和 E 的表达来进一步表现出调节影响，表明 EpCAM/TROP1 参与关键细胞过程的调节。它的单体性质以及与磷酸化 CLDN7 的相互作用强调了所涉及的复杂的分子相互作用，为该蛋白质在细胞生理学中的多种功能提供了见解。
种属
Human
表达宿主
HEK293 cells
Calculated MW
28.26 kDa
Observed MW
35-40 kDa
标签
C-His
纯度
> 95% by SDS-PAGE.
内毒素
< 0.1 EU/μg of the protein by LAL method.
制剂
Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.
描述
Recombinant Human Ep-CAM/TROP-1/CD326 Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Gln24-Lys265) of human EpCAM/TROP-1 (Accession #NP_002345.2) fused with a 6×His tag at the C-terminus.
储存
Store at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt.
After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ 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℃ for 3 months, at 2-8℃ 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。
生物活性
Measured by the ability of the immobilized protein to support the adhesion of NIH-3T3 mouse embryonic fibroblast cells. When cells are added to EpCAM-His coated plates (1.25μg/mL, 100μL/well), approximately >30% will adhere specifically after 30 minutes at 37℃.
复溶
Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex 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。
背景信息
This protein is a carcinoma-associated antigen and is a member of a family that includes at least two type I membrane proteins. This antigen is expressed on most normal epithelial cells and gastrointestinal carcinomas and functions as a homotypic calcium-independent cell adhesion molecule. The antigen is being used as a target for immunotherapy treatment of human carcinomas.