| Code | CSB-AP005181HU |
| Abbreviation | Recombinant Human CD40 protein, partial (Active) |
| MSDS | |
| Size | $184 |
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CD40–CD40L interactions are central to B-cell activation, germinal center formation, and immunoglobulin class switching, making a functionally validated soluble receptor construct essential for dissecting this co-stimulatory axis. This recombinant human CD40 encompasses the extracellular ligand-binding domain (aa 21–193) fused to a C-terminal Fc tag, and its functional integrity is confirmed by ELISA binding to immobilized CD40L with an ED50 of 0.45 µg/ml. Expression in mammalian cells preserves native glycosylation and disulfide-mediated folding of the cysteine-rich domains, supporting use in receptor-ligand interaction assays, competitive blocking antibody screening, therapeutic antibody epitope mapping, and SPR/BLI affinity characterization. Purity exceeding 95% by SDS-PAGE combined with endotoxin levels below 1.0 EU/µg satisfies the criteria typical for cell-based co-stimulation assays and drug discovery screens targeting the CD40 pathway.
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