Recombinant Human CD28 Protein (RP00136)

Overview

Product name	Recombinant Human CD28 Protein
Catalog No.	RP00136
Description	Recombinant Human CD28 Protein is produced by HEK293 expression system. The target protein is expressed with sequence (Asn19-Pro152) of human CD28/TP44 (Accession #NP_006130.1) fused with a 6×His tag at the C-terminus.
Bio-Activity	1.Measured by its binding ability in a functional ELISA. Immobilized Human CD28 Protein at 1 μg/mL (100 μL/well) can bind CD28 Rabbit mAb with a linear range of 0.06-1.04 ng/mL.
Purity	> 97% by SDS-PAGE.
Endotoxin	< 0.1 EU/μg of the protein by LAL method.
Formulation	Lyophilized from a 0.22 μm filtered solution of PBS, pH 7.4.Contact us for customized product form or formulation.
Species	Human
Calculated MW	15.98 kDa

The protein Involved in T-cell activation, the induction of cell proliferation and cytokine production and promotion of T-cell survival. Enhances the production of IL4 and IL10 in T-cells in conjunction with TCR/CD3 ligation and CD40L costimulation. Isoform 3 enhances CD40L-mediated activation of NF-kappa-B and kinases MAPK8 and PAK2 in T-cells.

Product information

Synonym	CD28; Tp44
Expression Host	HEK293 cells
Tag	C-His
Swiss-Prot
Gene ID

Usage guide

Storage	Store at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt. After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.
Reconstitution	Centrifuge the vial before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.

* For research use only. Not for therapeutic or diagnostic purposes.