CD40 is a member of the tumour necrosis factor (TNF) receptor super family, which includes the low affinity nerve growth factor (NGF) receptor and CD95/Fas. CD40 is the receptor for CD40 ligand. CD40 ligand (CD40L, CD154, gp39, and TRAM) belongs to the TNF gene family and is expressed more widely than CD40 predominantly on activated CD4+ T cells. Following interaction with CD40 ligand, CD40 mediates a number of major immunoregulatory functions, central to the control of thymus dependent humoral immunity and may be critical in the development of cell mediated immune responses. Other biological actions include B cell homotypic adhesion, proliferation, immunoglobulin isotype switch, and secretion. Activation of CD40 has also been shown to inhibit the growth of certain B cell lymphomas and to induce the death of transformed cells of mesenchymal or epithelial origin.
Target
CD40
Reactivity
Human
Host
Mouse
Clonality
Monoclonal
Tested Applications
FCM
Recommended dilutions
FCM: 20 μl/1 million cells. Optimal dilutions/concentrations should be determined by the end user.
Immunogen
Recombinant protein (Human CD40).
Purification
Affinity Chromatography
Form
Liquid
Isotype
IgG2b
Conjugation
PerCP
Specificity
CD40 is a 48 kD type I glycoprotein also known as BP50. It is a member of the TNFR superfamily primarily expressed on B cells, macrophages, follicular dendritic cells, endothelial cells, fibroblasts, and at low levels on plasma cells. CD40 has been reported to be involved in B cell differentiation, costimulation, isotype class-switching, and protection of B cells from apoptosis. Additionally, CD40 is important for T cell-B cell interactions.
Storage
Store in the dark at 2-8 °C.
Molecular Weight
48 to 50 kDa
Swiss Prot
P25942
GeneID
958
Buffer
The reagent is provided in aqueous buffered solution containing protein stabilizer, and ≤0.09% sodium Azide