Human CD40, Mouse IgG2a Fc Tag, low endotoxin (MALS verified) (CD0-H525a) is expressed from human 293 cells (HEK293). It contains AA Glu 21 - Arg 193 (Accession # P25942-1).
Predicted N-terminus: Glu 21
This protein carries a mouse IgG2a Fc tag at the C-terminus.
The protein has a calculated MW of 46.1 kDa. The protein migrates as 58 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
Less than 0.1 EU per μg by the LAL method.
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 100 mM Glycine, 150 mM NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.
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Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
Human CD40, Mouse IgG2a Fc Tag, low endotoxin (MALS verified) on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.
The purity of Human CD40, Mouse IgG2a Fc Tag, low endotoxin (MALS verified) (Cat. No.CD0-H525a) was more than 90% and the molecular weight of this protein is around 110-125 kDa verified by SEC-MALS.
Immobilized Human CD40 Ligand, Fc Tag (Cat. No. CDL-H5267) at 5 μg/mL (100 μL/well) can bind Human CD40, Mouse IgG2a Fc Tag, low endotoxin (Cat. No. CD0-H525a) with a linear range of 20-156 ng/mL (QC tested).
Loaded Human CD40, Mouse IgG2a Fc Tag, low endotoxin (Cat. No. CD0-H525a) on Protein A Biosensor, can bind Human CD40 Ligand, His,Flag Tag (active trimer) (MALS verified) (Cat. No. CDL-H52Db) with an affinity constant of 0.911 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).
FACS analysis shows that Human CD40, Mouse IgG2a Fc Tag, low endotoxin (Cat. No. CD0-H525a) can bind to 293T cells overexpressing human CD40L. The concentration of Human CD40 is 0.03 μg/ml (Routinely tested).
CD40 is also known as TNFRSF5, Bp50, CDW40, MGC9013, TNFRSF5 and p50, is a member of the TNF receptor superfamily which are single transmembrane-spanning glycoproteins, and plays an essential role in mediating a broad variety of immune and inflammatory responses including T cell-dependent immunoglobulin class switching, memory B cell development, and germinal center formation. CD40 is a costimulatory protein found on antigen presenting cells and is required for their activation. The binding of CD154 (CD40L) on TH cells to CD40 activates antigen presenting cells and induces a variety of downstream effects. CD40 contains 4 cysteine-rich repeats in the extracellular domain, and is expressed in B cells, dendritic cells, macrophages, endothelial cells, and several tumor cell lines.