Thermo Fisher Scientific CD22/BL-CAM (B-Cell Marker) Recombinant Mouse Monoclonal Antibody (rBLCAM/6749)

Applications

Tested Dilution

Publications

Immunohistochemistry (Paraffin) (IHC (P))

1-2 µg/mL

-

Immunoelectrophoresis (IE)

Assay-dependent

-

Product Specifications

Species Reactivity

Human

Host/Isotype

Mouse / IgG1, kappa

Expression System

HEK293 cells

Class

Recombinant Monoclonal

Type

Antibody

Clone

rBLCAM/6749

Immunogen

Recombinant fragment (around aa52-178) of human BL-CAM/CD22 protein. if (typeof window.$mangular === undefined || !window.$mangular) { window.$mangular = {}; } $mangular.antigenJson = \[{targetFamily:CD22,uniProtId:P20273-1,ncbiNodeId:9606,antigenRange:52-178,antigenLength:847,antigenImageFileName:933-MSM9-P1_CD22_P20273-1_House_mouse.svg,antigenImageFileNamePDP:933-MSM9-P1_CD22_P20273-1_House_mouse_PDP.jpeg,sortOrder:1}\]; $mangular.isB2BCMGT = false; $mangular.isEpitopesModalImageMultiSizeEnabled = true;

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Conjugate

Unconjugated Unconjugated Unconjugated

Form

Liquid

Concentration

200 µg/mL

Purification

Protein A/G

Storage buffer

PBS with 0.05% BSA

Contains

0.05% sodium azide

Storage conditions

4° C

Shipping conditions

Ambient (domestic); Wet ice (international)

Product Specific Information

Antibody is stable for 24 months.

Positive Control: Raji cells or human peripheral blood lymphocytes (hPBL). Human tonsil, lymph node or spleen. Cellular Localization: Cell Surface

Specificity Comments: Recognizes a protein of 130-140kDa, identified as CD22 (also known as BL-CAM). CD22 expression is restricted to normal and neoplastic B cells and is absent from other haemopoietic cell types. In B-cell ontogeny, CD22 is first expressed in the cytoplasm of pro-B and pre-B cells, and on the surface as B cells mature to become IgD+. It is not expressed by plasma cells, CD22 is found highly expressed in follicular mantle and marginal zone B-cells, and while germinal center B-cells are relatively weak. CD22 is a member of the immunoglobulin superfamily and serves as an adhesion receptor for sialic acid-bearing ligands expressed on erythrocytes and all leukocyte classes. It also associates with tyrosine kinases and play a role in signal transduction and B-cell activation.

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 Hodgkins lymphoma, but negative in classical Hodgkins lymphoma.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.