SIRP alpha V2 Protein, Human, Recombinant (aa 31-369, His)

Catalog No. TMPK-00611

Signal regulatory protein α (SIRPα) is a regulatory membrane glycoprotein from SIRP family expressed mainly by myeloid cells and also by stem cells or neurons.SIRPα acts as inhibitory receptor and interacts with a broadly expressed transmembrane protein CD47 also called the "don´t eat me" signal.Cancer cells highly expressed CD47 that activate SIRP α and inhibit macrophage-mediated destruction. SIRP alpha V2 Protein, Human, Recombinant (aa 31-369, His) is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 38 kDa and the accession number is AAH26692.1.

SIRP alpha V2 Protein, Human, Recombinant (aa 31-369, His)

Catalog No. TMPK-00611

Pack Size	Price	Availability
100 μg	$418	7-10 days
500 μg	$1,670	7-10 days
1 mg	$2,800	7-10 days

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Product Information

Biological Activity	1. Immobilized Human SIRP alpha V2, His Tag at 1μg/ml (100μl/Well) on the plate. Dose response curve for Human CD47, hFc Tag with the EC50 of 0.15μg/ml determined by ELISA. 2. Human SIRP alpha V2, His Tag captured on Protein A Chip via Anti-His Antibody can bind Anti-SIRP alpha Ab., hFc Tag with an affinity constant of 9.11nM as determined in SPR assay.
Description	Signal regulatory protein α (SIRPα) is a regulatory membrane glycoprotein from SIRP family expressed mainly by myeloid cells and also by stem cells or neurons.SIRPα acts as inhibitory receptor and interacts with a broadly expressed transmembrane protein CD47 also called the "don´t eat me" signal.Cancer cells highly expressed CD47 that activate SIRP α and inhibit macrophage-mediated destruction. SIRP alpha V2 Protein, Human, Recombinant (aa 31-369, His) is expressed in HEK293 mammalian cells with C-His tag. The predicted molecular weight is 38 kDa and the accession number is AAH26692.1.
Species	Human
Expression System	HEK293 Cells
Tag	C-His
Accession Number	AAH26692.1
Synonyms	SIRPα2,SIRPalpha2,SIRPA,SIRP α V2/CD172a,SIRP α,SIRP alpha,SHPS-1,SHPS1,PTPNS1,P84,MYD-1,MYD1,MFR,CD172a,BIT
Construction	Glu31-Arg369
Protein Purity	> 95% as determined by Tris-Bis PAGE; > 95% as determined by HPLC
Molecular Weight	38 kDa (predicted). Due to glycosylation, the protein migrates to 55-65 kDa based on Tris-Bis PAGE result.
Endotoxin	< 1 EU/μg by the LAL method.
Formulation	Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS (pH 7.4). Typically, 8% trehalose is incorporated as a protective agent before lyophilization.
Reconstitution	Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing.
Stability & Storage	It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
Shipping	In general, Lyophilized powders are shipping with blue ice.
Research Background	Signal regulatory protein α (SIRPα) is a regulatory membrane glycoprotein from SIRP family expressed mainly by myeloid cells and also by stem cells or neurons.SIRPα acts as inhibitory receptor and interacts with a broadly expressed transmembrane protein CD47 also called the "don´t eat me" signal.Cancer cells highly expressed CD47 that activate SIRP α and inhibit macrophage-mediated destruction.