CD40/TNFRSF5 Antibody


Immunohistochemistry-Paraffin: CD40/TNFRSF5 Antibody [NB100-56127] - Formalin-fixed paraffin-embedded tissue section of human tonsil stained for CD40 expression using this antibody at 1:2000. Staining is seen in the more

Product Details

Reactivity Hu, Mu, Rt, CaSpecies Glossary
Applications WB, IHC, IHC-P, IP
This product is unpurified. The exact concentration of antibody is not quantifiable.

Order Details

CD40/TNFRSF5 Antibody Summary

A recombinant protein containing the short cytoplasmic domain of the human CD40 molecule was used as immunogen.
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Packaging, Storage & Formulations

Store at 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
0.05% Sodium Azide
This product is unpurified. The exact concentration of antibody is not quantifiable.

Reactivity Notes

Cross reacts with Dog, Gerbil, Human, Mouse and Rat.

Alternate Names for CD40/TNFRSF5 Antibody

  • B cell surface antigen CD40
  • B-cell surface antigen CD40
  • Bp50B cell-associated molecule
  • CD40 antigen
  • CD40 molecule, TNF receptor superfamily member 5
  • CD40 type II isoform
  • CD40
  • CD40L receptor
  • CDw40
  • MGC9013
  • nerve growth factor receptor-related B-lymphocyte activation molecule
  • p50
  • TNFRSF5CD40 antigen (TNF receptor superfamily member 5)
  • tumor necrosis factor receptor superfamily member 5
  • tumor necrosis factor receptor superfamily, member 5


CD40 and its ligand CD154 are members of the tumor necrosis factor receptor (TNFR) and TNF families, respectively, that play key roles in signaling pathways mediating cell growth, survival and differentiation in B-lymphocytes (reviewed in Quezada et al 2004). The CD40 receptor is a 45-50 kDa glycoprotein and is expressed on the surface of B-lymphocytes, some activated T-cells, monocytes, follicular dendritic cells, basal epithelial cells, and in some epithelial and non-epithelial carcinomas. The functions of CD40 have been most extensively studied in B-cells. Ligation of B CD40 by CD154, expressed on activated T cells, stimulates B cell proliferation, differentiation, isotype switching, upregulation of surface molecules contributing to antigen presentation, development of the germinal center, and the humoral memory response. Several distinct structural motifs in the CD40 cytoplasmic domain regaulate various CD40 signaling pathways. A major CD40 signaling pathway activated from CD154 ligand binding is the canonical pathway to the transcription factor family NF-kB, a family of genes mediating immune and inflammatory responses. Although CD40 has been extensively studied as a plasma membrane-associated growth factor membrane receptor. it has also been identified in the cytoplasm and nucleus of normal and neoplastic B-lymphoid cells (Lin-Lee et al. 2006). Other growth factor receptors, including EGF, FGF, and TGF-B have also been identified in the nuclus. It is thought that plasma membrane receptor signaling may be followed by nuclear migration of signaling pathway components. The presence of CD40 in the nucleus of activated normal B lymphocytes and neoplastic B-lymphoid cells suggests that CD40 may play a more complex role in regulating essential growth and survival pathways in B-lymphocytes than previously thought.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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FAQs for CD40/TNFRSF5 Antibody (NB100-56127). (Showing 1 - 2 of 2 FAQ).

  1. I wanna know does CD40 antibody for IHC-P comes with positive control slide?
    • Our CD40 antibodies do not come with positive control slides however you can use any type of primary carcinoma cell as a positive control. I recommend breast carcinoma as this is what we have tested our CD40 antibodies on.
  2. We are studying CD40L in our system. It has been known that both CD40 and CD11b are receptors for CD40L. We need CD40 antibody to neutralize CD40 binding to CD40L, then we may prove what is function for CD11b binding to CD40L. Do you have any CD40 Ab which has block function only between CD40 and CD40L, but not between CD11b and CD40L?
    • Unfortunately, none of our CD40 antibodies have been specifically tested for this application.

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