• Product nameAnti-CD40 antibody [5C3] (Biotin)
    See all CD40 primary antibodies
  • Description
    Mouse monoclonal [5C3] to CD40 (Biotin)
  • ConjugationBiotin
  • Tested applicationsSuitable for: IHC-Fr, Flow Cytmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Recombinant fragment corresponding to extracellular domain of Human CD40.

  • Positive control
    • Splenocytes from hCD40 wild type/mCD40-/- mice.
  • General notes

    [Biotin] / [IgG] = 7.1



Our Abpromise guarantee covers the use of ab123040 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
IHC-Fr Use at an assay dependent concentration. Fix with acetone.
Flow Cyt Use at an assay dependent concentration. ab18434-Mouse monoclonal IgG1, is suitable for use as an isotype control with this antibody.


  • FunctionReceptor for TNFSF5/CD40LG.
  • Tissue specificityB-cells and in primary carcinomas.
  • Involvement in diseaseDefects in CD40 are the cause of hyper-IgM immunodeficiency syndrome type 3 (HIGM3) [MIM:606843]; also known as hyper-IgM syndrome 3. HIGM3 is an autosomal recessive disorder which includes an inability of B cells to undergo isotype switching, one of the final differentiation steps in the humoral immune system, an inability to mount an antibody-specific immune response, and a lack of germinal center formation.
  • Sequence similaritiesContains 4 TNFR-Cys repeats.
  • Cellular localizationSecreted and Cell membrane.
  • Information by UniProt
  • Database links
  • Alternative names
    • AI326936 antibody
    • B cell associated molecule CD40 antibody
    • B cell surface antigen CD40 antibody
    • B cell-associated molecule antibody
    • B-cell surface antigen CD40 antibody
    • Bp50 antibody
    • CD 40 antibody
    • CD40 antibody
    • CD40 antigen (TNF receptor superfamily member 5) antibody
    • CD40 antigen antibody
    • CD40 molecule antibody
    • CD40 molecule, TNF receptor superfamily member 5 antibody
    • CD40 protein antibody
    • CD40 type II isoform antibody
    • CD40L receptor antibody
    • CDw40 antibody
    • GP39 antibody
    • HIGM1 antibody
    • IGM antibody
    • IMD3 antibody
    • MGC9013 antibody
    • Nerve growth factor receptor related B lymphocyte activation molecule antibody
    • OTTHUMP00000031699 antibody
    • OTTHUMP00000031700 antibody
    • p50 antibody
    • T-BAM antibody
    • TBAM antibody
    • TNF receptor superfamily member 5 antibody
    • TNFRSF5 antibody
    • TNR5_HUMAN antibody
    • TRAP antibody
    • Tumor necrosis factor receptor superfamily , member 5 antibody
    • Tumor necrosis factor receptor superfamily member 5 antibody
    • Tumor necrosis factor receptor superfamily member 5 precursor antibody
    • Tumor necrosis factor receptor superfamily, member 5, isoform CRA_a antibody
    see all

References for Anti-CD40 antibody [5C3] (Biotin) (ab123040)

This product has been referenced in:
  • Ishida I  et al. Involvement of CD100, a lymphocyte semaphorin, in the activation of the human immune system via CD72: implications for the regulation of immune and inflammatory responses. Int Immunol 15:1027-34 (2003). Flow Cyt ; Human . Read more (PubMed: 12882840) »
  • Yasui T  et al. Dissection of B cell differentiation during primary immune responses in mice with altered CD40 signals. Int Immunol 14:319-29 (2002). Flow Cyt ; Human . Read more (PubMed: 11867568) »

See all 2 Publications for this product

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