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分子别名（Synonym）
CD80,B7,B7-1,B7.1,BB1,CD28LG,CD28LG1,LAB7
表达区间及表达系统（Source）
Mouse B7-1, His Tag (CD0-M5228) is expressed from human 293 cells (HEK293). It contains AA Val 38 - Lys 245 (Accession # Q00609-1).
Predicted N-terminus: Val 38
Request for sequence蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 25.6 kDa. The protein migrates as 40-55 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method / rFC method.
纯度（Purity）
>95% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（Reconstitution）
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储（Storage）
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
质量管理控制体系（QMS）
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数据展示
电泳（SDS-PAGE）
Mouse B7-1, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
SEC-MALS
The purity of Mouse B7-1, His Tag (Cat. No. CD0-M5228) is more than 85% and the molecular weight of this protein is around 35-50 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Mouse B7-1, His Tag (Cat. No. CD0-M5228) at 2 μg/mL (100 μL/well) can bind Mouse CTLA-4, Fc Tag (Cat. No. CT4-M5256) with a linear range of 0.1-2 ng/mL (QC tested).
Protocol
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背景介绍
B-lymphocyte activation antigen B7-1 (referred to as B7) also known as cluster of Differentiation 80 (CD80), is a member of cell surface immunoglobulin superfamily and is expressed on activated B cells, activated T cells, macrophages and dendritic cells. It is the ligand for two different proteins on the T cell surface: CD28 (for autoregulation and intercellular association) and CTLA-4 (for attenuation of regulation and cellular disassociation). CD80 works in tandem with CD86 to prime T cells. CD80 plays a role in induction of innate immune responses by activating NF-κB-signaling pathway in macrophages. CD80 is thus regarded as promising therapeutic targets for autoimmune diseases and various carcinomas.
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