Siglec-2/CD22 Protein, Human, Recombinant (hFc)

Catalog No. TMPJ-00393

Siglec-2/CD22 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with C-Fc tag. The predicted molecular weight is 120-150 KDa and the accession number is P20273.

Siglec-2/CD22 Protein, Human, Recombinant (hFc)

Catalog No. TMPJ-00393

Siglec-2/CD22 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with C-Fc tag. The predicted molecular weight is 120-150 KDa and the accession number is P20273.

Pack Size	Price	Availability
10 μg	$129	7-10 days
50 μg	$390	7-10 days
500 μg	$1,900	7-10 days
1 mg	$2,730	7-10 days

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Product Information

Biological Activity	Immobilized Anti-Human Siglec-2 mAb at 2μg/ml (100 μl/well)can bind Human Siglec-2-Fc. The ED50 of Human Siglec-2-Fc is 24.05 ng/ml. (Regularly tested)
Description	Siglec-2/CD22 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with C-Fc tag. The predicted molecular weight is 120-150 KDa and the accession number is P20273.
Species	Human
Expression System	HEK293 Cells
Tag	C-hFc
Accession Number	P20273
Synonyms	T-cell surface antigen Leu-14,SIGLEC2FLJ22814,Siglec-2,sialic acid binding Ig-like lectin 2,CD22 molecule,CD22 antigenMGC130020,CD22,B-lymphocyte cell adhesion molecule,BL-CAM,B-cell receptor CD22
Amino Acid	Asp20-Arg687
Construction	Asp20-Arg687
Protein Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Molecular Weight	120-150 KDa (reducing condition)
Endotoxin	< 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Formulation	Lyophilized from a solution filtered through a 0.22 μm filter, containing 20 mM Tris-HCl, 1 mM EDTA, 150 mM NaCl, pH 8.0.
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	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. Solutions are shipping with dry ice.
Research Background	Siglecs (sialic acid binding Ig-like lectins) are I-type (Ig-type) lectins belonging to the Ig superfamily. They are characterized by an N-terminal Ig-like V-type domain which mediates sialic acid binding, followed by varying numbers of Ig-like C2-type domains. Human Siglec-2, also known as B-cell antigen CD22 or B-lymphocyte cell adhesion molecule (BL-CAM), is a B-cell restricted glycoprotein that is expressed in the cytoplasm of progenitor B and pre-B cells and on the surface of mature B cells. Two distinct human Siglec-2/CD22 cDNAs that arise from differential RNA processing of the same gene have been isolated. Siglec-2/CD22 is an adhesion molecule that preferentially binds alpha 2,6- linked sialic acid on the same (cis) or adjacent (trans) cells. Interaction of CD22 with trans ligands on opposing cells was found to be favored over the binding of ligands in cis.