Biolegend, 166503, Ultra-LEAF™ Purified anti-mouse CD40 Antibody, 100μg

CD40, also known as Bp50, is a 48 kD type I transmembrane glycoprotein. It is a member of the tumor necrosis factor receptor (TNFR) superfamily and is expressed on B cells, basal epithelial cells, macrophages, follicular dendritic cells, endothelial cells, and a subset of CD34+ hematopoietic progenitors. CD40 regulates B cell development/maturation, Ig isotype switching and, in combination with other signals such as IL-4, protects B cells from surface Ig-induced apoptosis and promotes proliferation. Interaction of CD40 with its ligand CD154 (gp39), which is expressed on activated T cells, is important in costimulation and immune regulation.
100μg
Verified Reactivity: Mouse
Antibody Type: Monoclonal
Host Species: Rat
Immunogen: Recombinant mouse CD40 protein
Formulation: 0.2 µm filtered in phosphate-buffered solution, pH 7.2, containing no preservative.
Endotoxin Level: Less than 0.01 EU/μg of the protein (< 0.001 ng/μg of the protein) as determined by the LAL test
Preparation: The Ultra-LEAF™ (Low Endotoxin, Azide-Free) antibody was purified by affinity chromatography.
Concentration: The antibody is bottled at the concentration indicated on the vial, typically between 2 mg/mL and 3 mg/mL. To obtain lot-specific concentration and expiration, please enter the lot number in our Certificate of Analysis online tool.
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C. This Ultra-LEAF™ solution contains no preservative; handle under aseptic conditions.
Application: FC - Quality tested Activ - Verified
Recommended Usage: Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.25 µg per million cells in 100 µL volume. It is recommended that the reagent be titrated for optimal performance for each application.
Application Notes: Clone A20073F can completely block the binding of CD40L (CD154) to CD40 in a cell-based binding assay. Clone A20073F can completely block the binding of clones A20073M, FGK45, and 3/23 to the target. B cell activation effect of clone A20073F is comparable or better than clone 1C10.
RRID: AB_3683190 (BioLegend Cat. No. 166503)
Structure: TNFR superfamily, 48 kD
Distribution: B cells, basal epithelial cells, macrophages, follicular dendritic cells, endothelial cells, CD34+ hematopoietic progenitors
Function: Stimulates B cell growth, differentiation and isotype switching, stimulates macrophage and dendritic cell cytokine production
Ligand/Receptor: CD40L (CD154)
Cell Type: B cells
Biology Area: Adaptive Immunity, Cell Biology, Costimulatory Molecules, Immunology
Molecular Family: CD Molecules
Antigen References: Barclay A, et al. 1997. The Leukocyte Antigen FactsBook Academic Press. Bancherou J, et al. 1994. Annu. Rev. Immunol. 12:881. Clark EA, et al. 1996. P. Natl. Acad. Sci. USA. 83:4494.
Gene ID: 21939
UniProt: View information about CD40 on UniProt.org
Clone: A20073F
Regulatory Status: RUO
Other Names: Bp50, TNFRSF5
Isotype: Rat IgG2b, κ
Q: Do you guarantee that your antibodies are totally pathogen free?
A: BioLegend does not test for pathogens in-house aside from the GoInVivo™ product line. However, upon request, this can be tested on a custom basis with an outside, independent laboratory.
Q: Does BioLegend test each Ultra-LEAF™ antibody by functional assay?
A: No, BioLegend does not test Ultra-LEAF™ antibodies by functional assays unless otherwise indicated. Due to the possible complexities and variations of uses of biofunctional antibodies in different assays and because of the large product portfolio, BioLegend does not currently perform functional assays as a routine QC for the antibodies. However, we do provide references in which the antibodies were used for functional assays and we do perform QC to verify the specificity and quality of the antibody based on our strict specification criteria.
Q: Does BioLegend test each Ultra-LEAF™ antibody for potential pathogens?
A: No, BioLegend does not test for pathogens in-house unless otherwise indicated.  However, we can recommend an outside vendor to perform this testing as needed.
Q: Have you tested this Ultra-LEAF™ antibody for in vivo or in vitro applications?
A: We don't test our antibodies for in vivo or in vitro applications unless otherwise indicated. Depending on the product, the TDS may describe literature supporting usage of a particular product for bioassay. It may be best to further consult the literature to find clone specific information.