| Code | CSB-AP001701HU |
| Abbreviation | Recombinant Human IL3 protein (P27S) (Active) |
| MSDS | |
| Size | $354 |
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Interleukin-3 is a pleiotropic cytokine that drives proliferation and differentiation of multipotent hematopoietic progenitors, making validated recombinant forms essential for dissecting early lineage commitment and mast cell biology. This tag-free recombinant human IL-3 (P27S variant, residues 20–152) delivers exceptional signaling potency, with an ED50 below 0.1 ng/ml in a TF-1 cell proliferation assay — corresponding to a specific activity exceeding 1.0 × 10⁷ IU/mg — providing a reliable basis for dose–response studies, JAK/STAT and MAPK pathway activation experiments, and hematopoietic differentiation assays. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts, which supports use in sensitive immune cell functional assays, in vivo inflammation models, and as a reference standard in cytokine detection platforms such as ELISA. The full-length mature protein sequence, expressed in *E. coli* at greater than 96% purity, satisfies the quality thresholds commonly required for antibody validation workflows and quantitative bioassay standardization.
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