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CD22 Antibody (MA1-10144) in Flow
Separation of human CD22 positive lymphocytes (red-filled) from neutrophil granulocytes (black-dashed) in flow cytometry analysis (surface staining) of human peripheral whole blood stained using anti-human CD22 (IS7) FITC Monoclonal antibody (Product # MA1-10144) using a dilution of 20 µL/100 µL of peripheral whole blood.
Product Details
MA1-10144
Product Specifications
Species Reactivity
Human
Host/Isotype
Mouse
/ IgG1
Class
Monoclonal
Type
Antibody
Clone
IS7
Immunogen
Reh human cell line
Conjugate
Excitation/Emission Max
498/517 nm
View spectra
Form
Liquid
Purification
Size-exclusion chromatography
Storage buffer
PBS, pH 7.4, with 0.2% BSA
Contains
15mM sodium azide
Storage conditions
4°C, store in dark, DO NOT FREEZE!
Shipping conditions
Ambient (domestic); Wet ice (international)
RRID
AB_11154156
Product Specific Information
This antibody reacts with an extracellular epitope of CD22 (BL-CAM), a 130 kDa type I transmembrane glycoprotein (immunoglobulin superfamily) expressed in the cytoplasm of pro-B and pre-B lymphocytes, and on the surface of mature and activated B lymphocytes; it is lost on plasma cells, peripheral blood T lymphocytes, granulocytes and monocytes.
Target Information
CD22 (BL-CAM) is a type 1 integral membrane glycoprotein with molecular weight of 130 to 140 kDa. CD22 is expressed in both the cytoplasm and cell membrane of B-lymphocytes. CD22 antigen appears early in B-cell lymphocyte differentiation at approximately the same stage as the CD19 antigen. Unlike other B-cell markers, CD22 membrane expression is limited to the late differentiation stages comprised between mature B cells (CD22+) and plasma cells (CD22-), and may thus prove useful in phenotyping mature leukemias. CD22 is also strongly expressed in hairy cell leukemia. CD22 preferentially binds to alpha2,6-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. CD22 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. CD22 is also strongly expressed in hairy cell leukemia. CD22 is also positive in diffuse large B-cell lymphoma and nodular lymphocyte predominance Hodgkin’s lymphoma, but negative in classical Hodgkin’s lymphoma.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: B-cell receptor CD22; B-lymphocyte cell adhesion molecule; B-lymphocyte cell adhesion molecule (BL-CAM); BL-CAM; CD22; CD22 antigen; FLJ22814; Lectin 2; Leu-14; MGC130020; sialic acid binding Ig-like lectin 2; Sialic acid-binding Ig-like lectin 2; Sialic acid-binding Ig-like lectin 2 (Siglec-2); Siglec-2; T-cell surface antigen Leu-14
Gene Aliases: CD22; SIGLEC-2; SIGLEC2
UniProt ID: (Human) Q32M46
Entrez Gene ID: (Human) 933
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