ichorbio’s Anti-Mouse CD40 Antibody (FGK4.5) – FITC is manufactured in a cGMP compliant facility. ichorbio offers Amazon vouchers or donations to the NC3Rs for reviews of this product: click here for more information.
This monoclonal antibody was purified using multi-step affinity chromatography methods such as Protein A or G depending on the species and isotype.
B cells, basal epithelial cells, macrophages, follicular dendritic cells, and endothelial cells
CD40, also known as TNFSF5, is a type I transmembrane protein and member of the TNF receptor family. The binding of CD40L (CD154) on TH cells to CD40 activates antigen presenting cells and induces a variety of downstream effects. CD40 is 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 CD40L 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. Some of the early intracellular signaling by the CD4-CD40L system includes the association of the CD40 with TRAFs and the activation of various kinases (4). Adaptor protein TNFR2 interacts with this receptor and serves as a mediator of the signal transduction. The interaction of CD4-CD40L is found to be necessary for amyloid-beta-induced microglial activation, and thus is thought to be an early event in Alzheimer disease pathogenesis.
Recombinant Mouse CD40 Fusion Protein
This Fluorescein (FITC) conjugate is formulated in 0.01 M phosphate buffered saline (PBS) pH 7.4, 150 mM NaCl, 1% BSA and 0.09% sodium azide as a preservative.
This Fluorescein conjugate is stable when stored at 2-8°C. Do not freeze.
The suggested concentration for this FGK4.5 antibody for staining cells in flow cytometry is ≤ 1.0 μg per 10^6 cells in a volume of 100 μl. Titration of the reagent is recommended for optimal performance for each application. Each investigator should determine their own optimal working dilution for specific applications.
Products are for research use only. Not for use in diagnostic or therapeutic procedures.