Siglec-2/CD22, Mouse (HEK293, Fc)

Siglec-2/CD22 Protein, Mouse (690a.a, HEK293, Fc) is a Siglec of ~140 kDa with seven Ig-like domains and is expressed in a B-cell lineage-specific fashion, starting at the pre-B cell stage. CD22 is associated with membrane-bound IgM on the surface of B cells. Siglec-2 (CD22) specifically recognizes 2.6 sialic acid-containing glycans. Siglec-2 negatively regulates B cell antigen receptor (BCR) signaling by recruitment and activation of SH2-containing phosphatase 1 (SHP-1), which counteracts the phospharylation-mediated activation of signaling molecules by dephosphorylation, and reduces Ca2+ signaling by regulating the activity of the Ca2+ pump PMCA[1][2]. Siglec-2/CD22 Protein, Mouse (HEK293, Fc) is the recombinant mouse-derived Siglec-2/CD22 protein, expressed by HEK293 , with C-hFc labeled tag.