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  • GF101 - CD40 Ligand/TRAP Protein, Recombinant human

GF101 Sigma-Aldrich

CD40 Ligand/TRAP Protein, Recombinant human

The CD40 Ligand (CD40L/TRAP protein) is a type II membrane protein which, effectuates the helper function of T cells on resting B cells.

Synonym: CD154, TRAP, TNF-related activation protein, T cell antigen Gp39

  •  eCl@ss 32160405

  •  NACRES NA.75



biological source   human
application(s)   cell analysis: suitable (cell culture)
shipped in   dry ice
Quality Level   100
assay   >98% (SDS-PAGE and HPLC)
mfr. no.   Chemicon®
impurities   <0.1 ng/μg Endotoxin (of sCD40L/TRAP; 1EU/μg)
NCBI accession no.   NM_000074.2
UniProt accession no.   P29965
Gene Information   human ... CD40LG(959)


General description

CD40 Ligand (CD40L/TRAP) is a type II membrane protein which, effectuates the helper function of T cells on resting B cells. GF101 is a 16.3 kDa protein containing 149 amino acid residues comprising the receptor binding TNF-like domain of CD40L.

Product Source: Recombinant human

Physical form

Sterile filtered and lyophilized from 10 mM Sodium Phosphate, pH 7.5.

Storage and Stability

The lyophilized protein is stable for a few weeks for at room temperature but is best stored at -20ºC. Reconstitute in 10 mM Sodium Phosphate, pH7.5 to a concentration of 0.1-1 mg/mL. This solution can be diluted into other aqueous buffers and stored at 2-8ºC for one week or -20ºC for future use. Reconstituted sCD40L/TRAP should be stored at -20ºC in undiluted aliquots for up to 6 months. Freeze/thaw cycles will result in significant loss of activity.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Analysis Note

Specific Activity: GF101 is fully biologically active as determined by the dose-dependent stimulation of IL-8 production by human PBMC.The expected ED50 for this effect is 5-10 ng/ml.Note: Results may vary with PBMC donors.

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
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