Recombinant LD78-β/CCL3L1, Human
Catalogue Numbers: BK0119-5, BK0119-25
Sizes: 5μg, 25μg
Source: Escherichia coli
Molecular Weight: 7.8 kDa, observed by reducing SDS-PAGE.
Purity: > 95% by SDS-PAGE and HPLC analysis.
Biological Activity: ED50< 0.4 µg/mL, measured by the FLIPR assay using CHO cells transfected with human CCR5, the receptor of human CCL3L1, corresponding to a specific activity of > 2.5×10ˆ3 units/mg.
Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation: Lyophilized after extensive dialysis against PBS.
AA Sequence: APL AADTPTACCF SYTSRQIPQN FIADYFETSS QCSKPSVIFL TKRGRQVCAD PSEEWVQKYV SDLELSA
Endotoxin: < 0.2 EU/μg, determined by LAL method.
Reconstitution: Reconstituted in ddH2O at 100 μg/mL.
Storage: Lyophilized recombinant human LD78-beta/CCL3L1 (rhLD78-beta) remains stable up to 6 months at -80°C from date of receipt. Upon reconstitution, rhLD78-beta remains stable up to 2 weeks at 4°C or up to 3 months at -20°C.
Usage: This material is offered by USA Bioworld biotech for research, laboratory or further evaluation purposes. For research use only.
Description: LD78-beta/CCL3L1 is a proinflammatory chemokine and the isoform of Macrophage Inflammatory Protein-1 alpha (MIP-1 alpha). LD78-beta is secreted by most mature leukocytes, predominantly macrophages, and its major receptor is the G-protein coupled receptor CCR5, which is also the co-receptor used by the HIV-1 virus for cell entry. LD78-beta has superior antiviral activity and induces a variety of immune cells, particularly CD8+ T cells and immature dendritic cells. LD78-beta attracts lymphocytes and macrophages to sites of inflammation and infection, and its functions are inhibited by Interleukin-4, Interleukin-10, and Interleukin-13. Importantly, the copy number variation of LD78-beta is associated with HIV susceptibility, indicating LD78-beta’s critical role in the disease.Recombinant human LD78-beta/CCL3L1 (rhLD78-beta) produced in E.coli is a single non-glycosylated polypeptide chain containing 70 amino acids. A fully biologically active molecule, rhLD78-beta has a molecular mass of 7.8 kDa analyzed by reducing SDS-PAGE and is obtained by chromatographic techniques at GenScript.