| Code | CSB-AP000761HU |
| Abbreviation | Recombinant Human CXCL12 protein, partial (Active) |
| MSDS | |
| Size | $354 |
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CXCL12/SDF-1 is a pivotal chemokine that signals through CXCR4 and CXCR7 to regulate lymphocyte trafficking, hematopoietic stem cell homing, and tumor metastasis, making validated recombinant forms essential for mechanistic immunology research. This tag-free partial construct (residues 21–119 of Isoform Gamma), expressed in *E. coli* to preserve the mature sequence without eukaryotic post-translational modifications that could confound receptor-binding studies, demonstrates confirmed chemotactic activity at 30–100 ng/mL in a bioassay using PHA/IL-2-activated human peripheral blood T lymphocytes. That functional potency supports use in transwell migration assays, CXCR4-mediated MAPK and NF-κB signaling studies, and as a reference standard in chemokine detection platforms. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts in sensitive immune cell experiments, while purity exceeding 96% by SDS-PAGE aligns with standards expected in antibody validation workflows such as ELISA coating and Western blot positive controls.
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