纯度
> 95% as determined by Bis-Tris PAGE，> 95% as determined by HPLC
内毒素
< 1 EU/μg of the protein by LAL method.
制剂
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
描述
Recombinant Human SEMA4B Protein is produced by HEK293 Cells system. The target protein is expressed with sequence (Leu44-Glu717) of Human SEMA4B(Accession # Q9NPR2) fused with 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.
（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。
复溶
Dissolve the lyophilized protein in distilled water. 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。
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！
SEMA4B inhibits the invasion of non-small cell lung cancer (NSCLC) through PI3K-dependent suppression of MMP9 activation. SEMA4B may induce FoxO1 nuclear retention through suppressing PI3K/Akt signaling pathway, which subsequently inhibited cell growth through the direct nuclear target of FoxO1, p21. A role of SEMA4B in suppressing NSCLC growth, besides its role in inhibiting cell metastasis, and highlights SEMA4B as a promising therapeutic target for NSCLC.
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