Mouse CD28, His tag,specification,price,image-Bio-Equip in China

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Product Specification

Species	Mouse
Synonyms	T-cell-specific surface glycoprotein CD28
Accession	P31041
Amino Acid Sequence	Protein sequence (P31041, Asn20-Leu150, with C-10*His) NKILVKQSPLLVVDSNEVSLSCRYSYNLLAKEFRASLYKGVNSDVEVCVGNGNFTYQPQFRSNAEFNCDGDFDNETVTFRLWNLHVNHTDIYFCKIEFMYPPPYLDNERSNGTIIHIKEKHLCHTQSSPKLGGGGSHHHHHHHHHH
Expression System	HEK293
Molecular Weight	Predicted MW: 16.9 kDa Observed MW: 35 kDa
Purity	＞95% by SDS-PAGE
Endotoxin	<1EU/μg
Tag	with C-10*His
Physical Appearance	Lyophilized Powder
Storage Buffer	Lyophilized from a 0.2 μm filtered solution of 0.2M PBS, pH7.4.
Reconstitution	Reconstitute no more than 1 mg/mL according to the size in deionized water after rapid centrifugation.
Stability & Storage	12 months from date of receipt, -20 to -70 °C as supplied. 6 months, -20 to -70 °C under sterile conditions after reconstitution. 1 week, 2 to 8 °C under sterile conditions after reconstitution. Please avoid repeated freeze-thaw cycles.

Background

CD28 (Cluster of Differentiation 28) 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 is the receptor for CD80 (B7.1) and CD86 (B7.2) proteins. CD28 is the only B7 receptor constitutively expressed on naive T cells. Association of the TCR of a naive T cell with MHC:antigen complex without CD28:B7 interaction results in a T cell that is anergic. CD28 was identified on bone marrow stromal cells, plasma cells, neutrophils and eosinophils. In addition, the level of positive CD28 decreases with age.