Invitrogen™ CD40 Polyclonal Antibody

Rabbit Polyclonal Antibody

Catalog Number	Mfr. No.	Quantity
01-673-233	Invitrogen™ PA137334	1 mL
PIPA532325	Invitrogen™ PA532325	500 μL

Description

This antibody is predicted to react with bovine, canine, mouse, porcine based on sequence homology. Heat-mediated antigen retrieval is recommended prior to staining, using a 10mM citrate buffer, pH 6.0, for 10 minutes followed by cooling at room temperature for 20 min. Following antigen retrieval, incubate samples with primary antibody for 10 min at room temperature. A suggested positive control is tonsil or Hodgkin's lymphoma.

CD40 is a single-chain glycoprotein and a member of the tumor necrosis factor receptor (TNFR) family, exhibiting significant homology to the Hodgkin's disease-associated antigen, CD30. It is expressed by B lymphocytes, follicular dendritic cells, thymic epithelium, and a subset of peripheral T cells, as well as some epithelial cells, carcinomas, and lymphoid dendritic cells. Notably, CD40 is present on all B cells except plasma cells. CD40 plays a crucial role in regulating B cell development and maturation, inducing immunoglobulin isotype-switching, and protecting B cells from surface Ig-induced apoptosis when combined with other signals such as IL-4. It promotes proliferation and is essential for T cell-dependent immunoglobulin class switching, memory B cell development, and germinal center formation. The interaction between CD40 and its ligand CD154 (gp39) on T cells is vital for T-B cell crosstalk, costimulation, and immune regulation. Adaptor protein TNFR2 interacts with CD40, mediating signal transduction, while the AT-hook transcription factor AKNA is reported to regulate CD40 expression, which may be important for homotypic cell interactions. Additionally, the interaction between CD40 and its ligand is necessary for amyloid-beta-induced microglial activation, suggesting a role in the early pathogenesis of Alzheimer's disease. Two alternatively spliced transcript variants encoding distinct isoforms of CD40 have been identified. Diseases associated with CD40 dysfunction include Type 3 Hyper-IgM immunodeficiency and CD40 ligand deficiency, highlighting its importance in immune and inflammatory responses.

Specifications

• Antigen: CD40
• Content And Storage: Store at 4°C short term. For long term storage, store at -20°C, avoiding freeze/thaw cycles.
• Classification: Polyclonal
• Form: Liquid
• Isotype: IgG
• Target Species: Human
• Gene: CD40
• Gene Alias: AI326936; B cell surface antigen CD40; B cell-associated molecule; B-cell surface antigen CD40; Bp50; CD antigen CD40; Cd40; CD40 antigen; CD40 antigen (TNF receptor superfamily member 5); CD40 antigen, TNF receptor superfamily member 5; CD40 molecule; CD40 molecule, TNF receptor superfamily member 5; CD40L receptor; CDw40; GP39; HIGM1; I79_006806; IGM; IMD3; Immunoglobulin M; ImmunoglobulinM; membrane protein CD40; MGC9013; p50; receptor for ligand CD154; sCD40; soluble CD40; T-BAM; T-cell differentiation antigen; Tnfrsf5; TRAP; tumor necrosis factor receptor superfamily member 5; tumor necrosis factor receptor superfamily, member 5
• Gene Symbols: CD40
• Primary or Secondary: Primary
• Purification Method: Antigen affinity chromatography

• Concentration: 0.2 mg/mL
• Applications: Immunohistochemistry (Paraffin)
• Conjugate: Unconjugated
• Host Species: Rabbit
• Regulatory Status: RUO
• Formulation: PBS with 1% BSA and 0.1% sodium azide; pH 7.6
• Gene Accession No.: P25942
• Gene ID (Entrez): 958
• Immunogen: Synthetic peptide derived from C-terminus of human CD40.
• Product Type: Antibody