| Code | CSB-AP002211HU |
| Abbreviation | Recombinant Human CD40LG protein (C194W), partial (Active) |
| MSDS | |
| Size | $142 |
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The C194W substitution in this partial human CD40LG (residues 113–261) stabilizes the trimeric structure without requiring eukaryotic post-translational modifications, enabling robust E. coli expression of a tag-free, biologically active ligand. Validated potency is confirmed by an ED50 below 5–10 ng/ml in dose-dependent IL-8 stimulation of human PBMCs, supporting use in B cell activation and differentiation assays, NF-κB signaling pathway studies, and functional screening during anti-CD40L antibody development. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts that confound immune cell readouts, making this protein appropriate for PBMC proliferation assays, in vivo tumor immunology models, and as a reference standard in CD40LG detection platforms. Purity exceeding 95% by SDS-PAGE, combined with this stringent endotoxin control, satisfies the criteria typical for cell-based functional studies where cytokine-specific effects must be clearly distinguished from innate immune activation.
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