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CD19 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 31.6 kDa and the accession number is P15391-1.
规格 | 价格 | 库存 | 数量 |
---|---|---|---|
50 μg | ¥ 3,120 | 现货 | |
100 μg | ¥ 5,520 | 5日内发货 | |
200 μg | ¥ 9,730 | 5日内发货 | |
500 μg | ¥ 20,560 | 5日内发货 |
生物活性 | Immobilized Recombinant Human CD19 / Leu-12 Protein (ECD,His Tag) at 2 μg/mL (100 μL/well) can bind Monoclonal Anti-Human CD19 Antibody (IgG1) , the EC50 is 8-24 ng/mL. |
产品描述 | CD19 Protein, Human, Recombinant (His) is expressed in HEK293 mammalian cells with His tag. The predicted molecular weight is 31.6 kDa and the accession number is P15391-1. |
种属 | Human |
表达系统 | HEK293 Cells |
标签 | C-His |
蛋白编号 | P15391-1 |
别名 | CD19 molecule,B4,CVID3 |
蛋白构建 | A DNA sequence encoding the human CD19 (P15391-1) extracellular domain (Met1-Lys291) was expressed with a polyhistidine tag at the C-terminus. Predicted N terminal: Pro 20 |
蛋白纯度 | > 90 % as determined by SDS-PAGE |
分子量 | 31.6 kDa (predicted) |
内毒素 | < 1.0 EU/μg of the protein as determined by the LAL method. |
缓冲液 | Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization. |
复溶方法 | A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information. |
存储 | It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
运输方式 | In general, Lyophilized powders are shipping with blue ice. |
研究背景 | The cluster of differentiation (CD) system is commonly used as cell markers in Immunophenotyping. Different kinds of cells in the immune system can be identified through the surface CD molecules associating with the immune function of the cell. There are more than 320 CD unique clusters and subclusters have been identified. Some of the CD molecules serve as receptors or ligands important to the cell through initiating a signal cascade which then alter the behavior of the cell. Some CD proteins do not take part in cell signal process but have other functions such as cell adhesion. Cluster of differentiation 19 (CD19) is a member of CD system. CD19 is a cell surface molecule that assembles with the antigen receptor of B-cells. This results in a descent in the threshold for antigen receptor-dependent stimulation. A simplified view holds that the ability of B-cells to respond to the various antigens in a specific and sensitive manner is achieved in the presence of low-affinity antigen receptors. CD19 primarily acts as a B-cell co-receptor in conjunction with CD21 and CD81. The formation of the receptor complex is induced by antigen and CD19, induced by exogenous antigen, has been found cytoplasmic tail phosphorylated and bind to sIg.Cancer ImmunotherapyImmune CheckpointImmunotherapyTargeted Therapy |
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