活性重组蛋白 Recombinant Human CD46 Protein　重组蛋白

种属

Human

表达宿主

HEK293 cells

描述

Recombinant Human CD46 Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Cys35-Asp328) of human CD46 (Accession #NP_758861.1) fused with a 6×His tag at the C-terminus.

标签

C-His

纯度

> 90% 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.

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。

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

CD46 蛋白是补体因子 I 的重要辅助因子，补体因子 I 是一种丝氨酸蛋白酶，负责通过裂解宿主组织上沉积的 C3b 和 C4b 来保护自体细胞免受补体介导的损伤。除了在补体调节中的作用外，CD46 还参与受精过程中精子和卵母细胞之间的融合过程。此外，CD46 作为 T 细胞的共刺激因子，促进 CD4+ 细胞分化为 T 调节性 1 细胞。这些专门的 T 调节 1 细胞通过分泌白细胞介素 10 来促进免疫调节，从而在抑制免疫反应和预防自身免疫方面发挥关键作用。

背景信息

The recombinant human CD46 consists of 305 amino acids with a molecular weight of 34 kDa. The apparent molecular mass of recombinant human CD46 is about 55-60 kDa in SDS-PAGE under reducing conditions due to glycosylation.CD46 is also known as MCP and is a type I membrane protein that functions as a cofactor for Complement Factor I-mediated inactivation of complement components C3b and C4b. CD46 is expressed in white blood cells, platelets, epithelial cells, and fibroblasts. In T-cells by binding to CD46, A number of viral and bacterial pathogens seem to exploit this property and directly induce an immunosuppressive phenotype. Defects in CD46 are a cause of susceptibility to hemolytic uremic syndrome atypical type 2 (AHUS2),a disease characterized by uncontrolled complement activation.

基因ID

4179

Swiss Prot

P15529-11

别名

AHUS2;MCP;MIC10;TLX;TRA2.10;CD46