catalog number :
MBS465022
products full name :
Monoclonal Antibody to CD22 (human)
products short name :
[CD22]
products name syn :
[anti-CD22 MAb (LT22)]
other names :
[CD22; B-cell receptor CD22; B-cell receptor CD22; BL-CAM; CD22 antigen; T-cell surface antigen Leu-14; B-lymphocyte cell adhesion molecule; sialic acid binding Ig-like lectin 2; sialic acid-binding Ig-like lectin 2; CD22 molecule; B-lymphocyte cell adhesion molecule; BL-CAM; Sialic acid-binding Ig-like lectin 2; Siglec-2; T-cell surface antigen Leu-14]
products gene name :
[CD22]
other gene names :
[CD22; CD22; SIGLEC2; SIGLEC-2; SIGLEC2; BL-CAM; Siglec-2]
uniprot entry name :
CD22_HUMAN
reactivity :
CD22 antigen (human)
specificity :
CD22 antigen (human)
purity :
>95% (by PAGE). Purified from ascites by DEAE chromatography.
form :
0.1 mg in solution (20 mM Tris-HCl containing 15 mM sodium azide, pH 7.4).
concentration :
0.22 mg/ml
storage stability :
Store at +4 degree C for 3 months. For long-term storage, aliquot and store at -20 degree C. Avoid freeze/thaw cycles.
tested application :
Flow Cytometry (FC/FACS)
other info1 :
Immunogen: Daudi cells
ncbi acc num :
BAA36576.1
ncbi mol weight :
95,348 Da
ncbi pathways :
B Cell Receptor Signaling Pathway (198909); B Cell Receptor Signaling Pathway (83081); B Cell Receptor Signaling Pathway (492); BCR Signaling Pathway (138058); Cell Adhesion Molecules (CAMs) Pathway (83069); Cell Adhesion Molecules (CAMs) Pathway (480); Hematopoietic Cell Lineage Pathway (83078); Hematopoietic Cell Lineage Pathway (489)
uniprot summary :
Function: Mediates B-cell B-cell interactions. May be involved in the localization of B-cells in lymphoid tissues. Binds sialylated glycoproteins; one of which is CD45. Preferentially binds to alpha-2,6-linked sialic acid. The sialic acid recognition site can be masked by cis interactions with sialic acids on the same cell surface. Upon ligand induced tyrosine phosphorylation in the immune response seems to be involved in regulation of B-cell antigen receptor signaling. Plays a role in positive regulation through interaction with Src family tyrosine kinases and may also act as an inhibitory receptor by recruiting cytoplasmic phosphatases via their SH2 domains that block signal transduction through dephosphorylation of signaling molecules. Subunit structure: Predominantly monomer of isoform CD22-beta. Also found as heterodimer of isoform CD22-beta and a shorter isoform. Interacts with PTPN6/SHP-1, LYN, SYK, PIK3R1/PIK3R2 and PLCG1 upon phosphorylation. Interacts with GRB2, INPP5D and SHC1 upon phosphorylation . By similarity. May form a complex with INPP5D/SHIP, GRB2 and SHC1. Ref.8 Ref.9 Ref.10. Subcellular location: Cell membrane; Single-pass type I membrane protein. Tissue specificity: B-lymphocytes. Domain: Contains 4 copies of a cytoplasmic motif that is referred to as the immunoreceptor tyrosine-based inhibitor motif (ITIM). This motif is involved in modulation of cellular responses. The phosphorylated ITIM motif can bind the SH2 domain of several SH2-containing phosphatases. Post-translational modification: Phosphorylation of Tyr-762, Tyr-807 and Tyr-822 are involved in binding to SYK, GRB2 and SYK, respectively. Phosphorylation of Tyr-842 is involved in binding to SYK, PLCG2 and PIK3R1/PIK3R2.Phosphorylated on tyrosine residues by LYN . By similarity. Sequence similarities: Belongs to the immunoglobulin superfamily. SIGLEC (sialic acid binding Ig-like lectin) family.Contains 6 Ig-like C2-type (immunoglobulin-like) domains.Contains 1 Ig-like V-type (immunoglobulin-like) domain. Sequence caution: The sequence CAA36988.1 differs from that shown. Reason: Frameshift at position 806.