纯度
≥ 95 % as determined by SDS-PAGE.≥ 95 % as determined by HPLC.
内毒素
< 1 EU/μg of the protein by LAL method.
制剂
Supplied as 0.22μm filtered solution in PBS (pH 7.4). Notice: If you need it for immunization, Do Not use any adjuvant.
描述
Recombinant Human Claudin-4 Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Met1-Val209) of human Claudin-4 (Accession #NP_001296.1 ) fused with no additional amino acid.
储存
Store at -70℃. This product is stable at ≤ -70℃ for up to 1 year from the date of receipt. For optimal storage, aliquot into smaller quantities after centrifugation and store at recommended temperature. Avoid repeated freeze-thaw cycles.
（1）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；
（2）干粉蛋白复溶浓度建议在0.1-0.5 mg/mL，不能低于0.1mg/mL，长期储存请添加保护剂（如0.1%BSA），并分装保存，避免反复冻融；
（3）液体蛋白的保存温度及效期请参考说明书，如对液体蛋白浓度有要求，请提前咨询销售或者技术支持。
生物活性
Immobilized Human Claudin-4 VLP at 1μg/ml (100μl/well) on the plate. Dose response curve for Anti-Claudin 4 Antibody, hFc Tag with the EC50 of 18.4ng/ml determined by ELISA.
请在蛋白复溶计算器中输入蛋白总质量和所需终浓度，快速计算您需要添加溶液的体积吧！
Claudin-4 (CLDN4) is a key component of tight junctions (TJs) in epithelial cells. CLDN4 is overexpressed in many epithelial malignancies and correlates with cancer progression. Changes in CLDN4 expression have been associated with epigenetic factors (such as hypomethylation of promoter DNA), inflammation associated with infection and cytokines, and growth factor signaling. CLDN4 helps to maintain the tumor microenvironment by forming TJs and acts as a barrier to the entry of anticancer drugs into tumors.
