Recombinant Human CD28 Protein (19-152aa), C-hIgG-His-Tagged
Product Description
Cat
IMP-9438
Official Symbol
CD28
Product Overview
Recombinant human CD28, fused to hIgG-His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.
Description
CD28, also known as T-cell-specific surface glycoprotein CD28 isoform 1, is one of the proteins expressed on T cells that provide co-stimulatory signals required for T cell activation and survival. T cell stimulation through CD28 in addition to the T-cell receptor (TCR) can provide a potent signal for the production of various interleukins (IL-6 in particular). CD28/B7 interaction has been shown to prevent apoptosis of activated T cells via the up-regulation of bcl-XL. It ligation has also been shown to regulate Th1/Th2 differentiation.
Expression System
Baculovirus
Species
Human
Tag
C-hIgG-His
Form
Liquid in Phosphate-Buffered Saline (pH 7.4) containing 10% glycerol
Molecular Mass
42.4 kDa (376 aa)
Protein length
19-152
AA Sequence
<ADP>NKILVKQSPMLVAYDNAVNLSCKYSYNLFSREFRASLHKGLDSAVEVCVVYGNYSQQLQVYSKTGFNCDGKLGNESVTFYLQNLYVNQTDIYFCKIEVMYPPPYLDNEKSNGTIIHVKGKHLCPSPLFPGPSKP<LEPKSCDKTHTCPPCPAPELLGGPSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYNSTYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSRDELTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRWQQGNVFSCSVMHEALHNHYTQKSLSLSPGKHHHHHH>
Endotoxin
< 1 EU/μg of protein (determined by LAL method)
Purity
> 90% by SDS-PAGE
Applications
SDS-PAGE, Bioactivity
Notes
Note: For research use only. This product is not intended or approved for human, diagnostics or veterinary use.
Storage
Can be stored at +2 to +8 centigrade for 1 week. For long term storage, aliquot and store at -20 to -80 centigrade. Avoid repeated freezing and thawing cycles.
Concentration
1 mg/mL (determined by absorbance at 280nm)
SDS-PAGE
SDS-PAGE

3 μg by SDS-PAGE under reducing condition and visualized by coomassie blue stain.

Bioactivity-ELISA 1
Biological Activity

Human CD80 is coated at 1 μg/mL (100 μL/well) can bind Human CD28. The ED50 range ≤ 10μg/mL.

Data Sheet MSDS
For research or industrial raw materials, not for personal medical use!

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