Anti-Mouse CD40 In Vivo Antibody - Ultra Low Endotoxin (FGK4.5)

Ultra-Low Endotoxin, anti-mouse

This monoclonal antibody was purified using multi-step affinity chromatography methods such as Protein A or G depending on the species and isotype.

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.

> 2.0 mg/ml

≤ 0.5 EU/mg as determined by the LAL method

We use the IMPACT test generated by IDEXX Laboratories to guarantee our Ultra Low Endotoxin antibodies are pathogen free. Our rat antibodies are tested for: - Mycoplasma spp - Mycoplasma pulmonis - Pneumonia virus of mice - Kilham's rat virus - Toolan's H1 virus - Rat parvovirus - Lymphocytic choriomeningitis virus - Rat cytomegalovirus - Sendai virus - Rat coronavirus - Sialodacryoadenitis virus - Rat minute virus - Seoul virus - Mouse adenovirus - Reovirus 3 - Rat theilovirus

Each investigator should determine their own optimal working dilution for specific applications.