Murine sCD40 Ligand/重组小鼠sCD40 Ligand
产品编号:M10-054
产品规格:25μg
Description: CD40, a member of the TNF receptor family, is a cell surface protein expressed on B cells, dendritic cells, monocytes, thymic epithelial cells and, at low levels, on T cells. Signaling though CD40 plays an important role in the proliferation and differentiation of B cells, and is critical for immunoglobulin (Ig) class switching. The membrane-anchored CD40-Ligand is expressed almost exclusively on activated CD4+ T lymphocytes. Failure to express CD40L leads to "immunodeficiency with hyper-IgM", a disease characterized by failure to produce IgG, IgA and IgE. The soluble form of CD40L is an 18kDa protein comprising the entire TNF homologous region of CD40L and is generated in vivo by an intracellular proteolytic processing of the full length CD40L. Recombinant murine CD40L is a soluble 16.4 kDa protein containing 149 amino acid residues comprising the receptor binding TNF-like domain of CD40L.
Source: E. coli
Molecular Weight: 16.4 kDa
Purity: > 98% by SDS-PAGE
Endotoxin level/内毒素水平: < 0.1 ng per μg of sCD40
Stabilizer: none
Formulation: lyophilized
Biological Activity: Determined by its ability to induce TNF-alpha and MIP-1 alpha production by murine splenocytes. The expected for this effect is < 0.1 μg/ml.
Stability: The lyophilized protein is stable for at least 2 years from date of receipt at -200C. Reconstituted sCD40L is stable for at least 3 months when stored in working aliquots with a carrier protein at -200C. Avoid repeated freeze/thaw cycles.
Avoid repeated freeze-thaw cycles.
Usage: Murine sCD40 Ligand is offered for research use. Not for drug use. Not for human use.