Invitrogen™ CD40 Polyclonal Antibody

Catalog No.	Quantity
PIPA578980	100 μg

Catalog No. PIPA578980 Supplier Invitrogen™ Supplier No. PA578980

Description

Rabbit Polyclonal Antibody

Reconstitute with 0.2 mL of distilled water to yield a concentration of 500 μg/mL. Positive Control - WB: mouse spleen tissue. IHC: mouse lymphaden tissue. Flow: U937 cell.

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
• Applications: ELISA, Flow Cytometry, Immunohistochemistry (Frozen), Immunohistochemistry (Paraffin), Western Blot, Immunocytochemistry
• Classification: Polyclonal
• Concentration: 500 μg/mL
• Conjugate: Unconjugated
• Formulation: PBS with 5mg BSA and 0.05mg sodium azide
• Gene: CD40
• Gene Accession No.: P25942, P27512
• 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
• Host Species: Rabbit
• Immunogen: E. coli-derived mouse CD40/TNFRSF5 recombinant protein (Position: L20-R193).
• Purification Method: Antigen affinity chromatography
• Quantity: 100 μg
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 21939, 958
• Target Species: Human, Mouse
• Content And Storage: -20°C
• Product Type: Antibody
• Form: Lyophilized
• Isotype: IgG