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Home / Proteins & Peptide

Recombinant Human/Cynomolgus CD28 (C-Fc)

SKU : BHP15200281

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ELK Biotechnology

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Mfr.No.	EPT281
Description	Recombinant Human/Cynomolgus T-cell-specific Surface Glycoprotein CD28 is produced by our Mammalian expression system and the target gene encoding Asn19-Pro152 is expressed with a Fc tag at the C-terminus.
Alternative Names	CD28; CD28 antigen; CD28 molecule; T-cell-specific surface glycoprotein CD28; Tp44; TP44
Background	T-cell-specific surface glycoprotein CD28(CD28) is a single-pass typeI membrane protein which contains one Ig-likeV-type (immunoglobulin-like) domain. It belongs to the immunoglobulin(Ig) superfamily. CD28 is one of the molecules expressed on T cells that provide co-stimulatory signals, which are required for T cell activation.CD28 co-stimulation is necessary for CD4 positive T-cell proliferation and survival, interleukin-2 production, and T-helper type-2 development. Human post-thymic regulatory T cells require CD28 co-stimulation to expand and maintain potent suppressive function in vivo. Apoptosis plays a key role in the age-related decline of CD28 expression and in immunosenescence. CD28 is the receptor for CD80 (B7.1) and CD86 (B7.2). When activated by Toll-like receptor ligands, the CD80 expression is upregulated in antigen presenting cells (APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells.
Biological Activity	Immobilized Anti-CD28 mAb(Cat#GMP-A063) at 2ug/ml (100 ul/well) can bind Human/Cynomolgus CD28-Fc (Cat#CX81): Biotinylated by NHS-biotin prior to testing The ED50 of Human/Cynomolgus CD28-Fc *(Cat#CX81) is 83.5 ng/ml.
Molecular Weight	42.3 KDa
Accession Number	P10747
Endotoxin Level	Less than 0.1 ng/ug (1 EU/ug) as determined by LAL test.
Notes	Always centrifuge tubes before opening.Do not mix by vortex or pipetting. It is not recommended to reconstitute to a concentration less than 100ug/ml. Dissolve the lyophilized protein in distilled water. Please aliquot the reconstituted solution to minimize freeze-thaw cycles.

Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature listed below.
Purity	Greater than 95%
Storage	Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

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SKU	Supplier No.	Size	Your price	Quantity
BHP15200281	EPT281	10ug	$59		Add to Cart

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