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分子别名（Synonym）
CD40LG,CD154,CD40L,HIGM1,IGM,IMD3,T-BAM,TNFSF5,TRAP,gp39
表达区间及表达系统（Source）
Human CD40 Ligand Protein, Fc Tag, premium grade (CDL-H5269) is expressed from human 293 cells (HEK293). It contains AA Gly 116 - Leu 261 (Accession # P29965-1) trimer Design.
预测的 N 端信息: Pro
It is produced under our rigorous quality control system that incorporates a comprehensive set of tests including sterility and endotoxin tests. Product performance is carefully validated and tested for compatibility for cell culture use or any other applications in the early preclinical stage. When ready to transition into later clinical phases, we also offer a custom GMP protein service that tailors to your needs. We will work with you to customize and develop a GMP-grade product in accordance with your requests that also meets the requirements for raw and ancillary materials use in cell manufacturing of cell-based therapies.
蛋白结构（Molecular Characterization）
This protein carries a human IgG1 Fc tag at the N-terminus.
The protein has a calculated MW of 74.7 kDa. The protein migrates as 120-150 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under non-reducing (NR) condition (SDS-PAGE) due to glycosylation.
内毒素（Endotoxin）
Less than 0.1 EU per μg by the LAL method.
无菌（Sterility）
Negative
支原体（Mycoplasma）
Negative.
纯度（Purity）
95% as determined by SDS-PAGE.
90% as determined by SEC-MALS.
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）
产品数据图
电泳（SDS-PAGE）
Human CD40 Ligand Protein, Fc Tag, premium grade on SDS-PAGE under non-reducing (NR) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Human CD40 Ligand Protein, Fc Tag, premium grade (Cat. No. CDL-H5269) is more than 90% and the molecular weight of this protein is around 140-180 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-CELL BASE
Human CD40 Ligand Protein, Fc Tag, premium grade (Cat. No. CDL-H5269) stimulates secretion of IL-6 by human B cells. The ED50 for this effect is 9.68-11.48 ng/mL in the presence of 5 ng/mL of Recombinant Human IL‑4 (Routinely tested).
Protocol活性（Bioactivity）-CELL BASE
Neutralization assay shows that the cytokine secretion effect of Human CD40 Ligand Protein, Fc Tag, premium grade (Cat. No. CDL-H5269) was inhibited by increasing concentration of anti-CD40L mAb. The concentration of CD40L used is 50 ng/mL. The EC50 is 0.051-0.058 μg/mL (Routinely tested).
Protocol
活性（Bioactivity）-FACS
FACS analysis shows that Human CD40 Ligand Protein, Fc Tag, premium grade (Cat. No. CDL-H5269) can bind to 293T-CD40 cells surface CD40. The concentration of Human CD40 Ligand is 0.3 μg/mL (Routinely tested).
Protocol
活性（Bioactivity）-ELISA
Immobilized Human CD40 Protein, His Tag (Cat. No. CD0-H5228) at 1 μg/mL (100 μL/well) can bind Human CD40 Ligand Protein, Fc Tag, premium grade (Cat. No. CDL-H5269) with a linear range of 0.2-3 ng/mL (QC tested).
Protocol
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背景
CD40 ligand binds to CD40 on antigen-presenting cells (APC), which leads to many effects depending on the target cell type. In general, CD40 ligand plays the role of a costimulatory molecule and induces activation in APC in association with T cell receptor stimulation by MHC molecules on the APC. In total CD40 ligand has three binding partners: CD40, α5β1 integrin and αIIbβ3. CD40 ligand regulates B cell function by engaging CD40 on the B cell surface. A defect in this gene results in an inability to undergo immunoglobulin class switch and is associated with hyper IgM syndrome.
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