• Call +1.858.633.0165 or Fax +1.858.633.0166 or Contact Us

CD40 recombinant protein

Scan QR to view Datasheet
Catalog # MBS538087
Unit / Price
  0.01 mg  /  $180 +1 FREE 8GB USB
  0.05 mg  /  $310 +1 FREE 8GB USB
CD40 recombinant protein
Product Name

CD40, Recombinant Protein

Popular Item
Also Known As

CD40 protein

Product Synonym Names
soluble CD40 Ligand protein; CD-40 protein; CD-40; CD40; CD 40; TRAP protein; TNFSF5 protein; gp39 protein; T-BAM protein; CD154 protein; CD 40 protein
Research Use Only
For Research Use Only. Not for use in diagnostic procedures.
Sequence Length
> 98% pure
Sterile filtered through a 0.2 um filter. Lyophilized from 10 mM Na3PO4, pH 7.5. Reconstitute in 5-10 mM Na3PO4, pH 7.5 to a concentration of 0.1-1.0 mg/ml.
Protein Type
Biological Significance
CD40, a member of the TNF receptor family, is a cell surface protein expressed on B cells, dendritic cells, monocytes, thymic epithelial cells and, at low levels, on T cells. Signaling though CD40 plays an important role in the proliferation and differentiation of B cells, and is critical for immunoglobulin (Ig) class switching. The membrane-anchored CD40-Ligand is expressed almost exclusively on activated CD4+ T lymphocytes. Failure to express CD40L leads to "immunodeficiency with hyper-IgM", a disease characterized by failure to produce IgG, IgA and IgE. The human CD40L gene codes for a 261 amino acid type II transmembrane protein, which contains a 22 amino acid cytoplasmic domain, a 24 amino acid transmembrane domain, and a 215 amino acid extracellular domain. The soluble form of CD40L is an 18 kDa protein comprising the entire TNF homologous region of CD40L and is generated in vivo by an intracellular proteolytic processing of the full length CD40L.
Endotoxin Levels
Endotoxin level is less than 0.1 ng per ug (1 EU/ug).
Expression System
E Coli
Preparation and Storage
Store at 4 degree C until reconstitution. Following reconstitution aliquot and freeze at -20 degree C for long term storage. Avoid repeated freeze/thaw cycles.
Other Notes
Small volumes of CD40 recombinant protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.
Related Product Information for
CD40 recombinant protein
Purified recombinant Human CD40 protein
Product Categories/Family for CD40 recombinant protein
Applications Tested/Suitable for CD40 recombinant protein
User optimized
NCBI/Uniprot data below describe general gene information for CD40. It may not necessarily be applicable to this product.
NCBI Accession #
UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
16.3 kDa
NCBI Official Full Name
CD40, partial
NCBI Official Synonym Full Names
CD40 molecule, TNF receptor superfamily member 5
NCBI Official Symbol
NCBI Official Synonym Symbols
p50; Bp50; CDW40; TNFRSF5
  [Similar Products]
NCBI Protein Information
tumor necrosis factor receptor superfamily member 5
UniProt Protein Name
Tumor necrosis factor receptor superfamily member 5
UniProt Synonym Protein Names
B-cell surface antigen CD40; Bp50; CD40L receptor; CDw40; CD_antigen: CD40
Protein Family
UniProt Gene Name
UniProt Synonym Gene Names
TNFRSF5  [Similar Products]
UniProt Entry Name
NCBI Summary for CD40
This gene is a member of the TNF-receptor superfamily. The encoded protein is a receptor on antigen-presenting cells of the immune system and is essential for mediating a broad variety of immune and inflammatory responses including T cell-dependent immunoglobulin class switching, memory B cell development, and germinal center formation. AT-hook transcription factor AKNA is reported to coordinately regulate the expression of this receptor and its ligand, which may be important for homotypic cell interactions. Adaptor protein TNFR2 interacts with this receptor and serves as a mediator of the signal transduction. The interaction of this receptor and its ligand is found to be necessary for amyloid-beta-induced microglial activation, and thus is thought to be an early event in Alzheimer disease pathogenesis. Mutations affecting this gene are the cause of autosomal recessive hyper-IgM immunodeficiency type 3 (HIGM3). Multiple alternatively spliced transcript variants of this gene encoding distinct isoforms have been reported. [provided by RefSeq, Nov 2014]
UniProt Comments for CD40
CD40: a member of the TNF-receptor superfamily. This receptor for CD40L mediates a broad variety of immune and inflammatory responses including T cell-dependent immunoglobulin class switching, memory B cell development, and germinal center formation. Defects in CD40 are the cause of hyper-IgM immunodeficiency type 3 (HIGM3). 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. Two alternatively spliced isoforms have been reported. Isoform I is a type I membrane protein; isoform II is secreted.

Protein type: Receptor, cytokine; Membrane protein, integral

Chromosomal Location of Human Ortholog: 20q12-q13.2

Cellular Component: extracellular space; cell surface; intracellular membrane-bound organelle; integral to plasma membrane; cytoplasm; plasma membrane; external side of plasma membrane

Molecular Function: protein binding; signal transducer activity; enzyme binding; ubiquitin protein ligase binding; receptor activity; antigen binding

Biological Process: B cell proliferation; platelet activation; positive regulation of isotype switching to IgG isotypes; regulation of immune response; positive regulation of I-kappaB kinase/NF-kappaB cascade; positive regulation of interleukin-12 production; immune response-regulating cell surface receptor signaling pathway; activation of NF-kappaB transcription factor; cellular calcium ion homeostasis; positive regulation of MAP kinase activity; positive regulation of tyrosine phosphorylation of Stat1 protein; positive regulation of B cell proliferation; protein kinase B signaling cascade; positive regulation of transcription from RNA polymerase II promoter; protein complex assembly; positive regulation of protein amino acid phosphorylation; inflammatory response; defense response to virus; regulation of immunoglobulin secretion

Disease: Immunodeficiency With Hyper-igm, Type 3
All of MyBioSource's Products are for scientific laboratory research purposes and are not for diagnostic, therapeutics, prophylactic or in vivo use. Through your purchase, you expressly represent and warrant to MyBioSource that you will properly test and use any Products purchased from MyBioSource in accordance with industry standards. MyBioSource and its authorized distributors reserve the right to refuse to process any order where we reasonably believe that the intended use will fall outside of our acceptable guidelines.
While every efforts were made to ensure the accuracy of the information provided in this datasheet, MyBioSource will not be liable for any omissions or errors contained herein. MyBioSource reserves the right to make changes to this datasheet at any time without prior notice.

It is the responsibility of the customer to report product performance issues to MyBioSource within 30 days of receipt of the product. Please visit our Terms & Conditions page for more information.
Request a Quote

Please fill out the form below and our representative will get back to you shortly.

Contact Us

Please fill out the form below and our representative will get back to you shortly.