|Flow Cytometry (Flow)||Assay Dependent|
|Immunohistochemistry (Paraffin) (IHC (P))||Assay-Dependent|
|Tested Species reactivity||Human|
|Host / Isotype||Mouse / IgM|
|Immunogen||RAMOS human lymphoma cell line.|
|Storage buffer||TBS, pH 8|
|Contains||15mM sodium azide|
|Storage conditions||4° C, do not freeze|
CD20 is a cell surface 33-37 (depending on the degree of phosphorylation) kDa non-glycosylated surface phosphoprotein expressed on mature and most malignant B cells, but not stem cells or plasma cells (low number of the CD20 has been also detected on a subpopulation of T lymphocytes and it can be expressed on follicular dendritic cells). Its expression on B cells is synchronous with the expression of surface IgM. CD20 regulates transmembrane calcium conductance (probably functioning as a component of store-operated calcium channel), cell cycle progression and B-cell proliferation. It is associated with lipid rafts, but the intensity of this association depends on extracellular triggering, employing CD20 conformational change and/or BCR (B cell antigen receptor) aggregation. After the receptor ligation, BCR and CD20 colocalize and then rapidly dissociate before BCR endocytosis, whereas CD20 remains at the cell surface. CD20 serves as a useful target for antibody-mediated therapeutic depletion of B cells, as it is expressed at high levels on most B-cell malignancies, but does not become internalized or shed from the plasma membrane following mAb treatment.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: B-lymphocyte antigen CD20; B-lymphocyte cell-surface antigen B1; B-lymphocyte surface antigen B1; Bp35; CD20; CD20 antigen; CD20 receptor; LEU-16; Leukocyte surface antigen Leu-16; Membrane-spanning 4-domains subfamily A member 1; membrane-spanning 4-domains, subfamily A, member 1; MGC3969; MS4A1
Gene Aliases: B1; Bp35; CD20; CVID5; LEU-16; MS4A1; MS4A2; S7
UniProt ID: (Human) P11836
Entrez Gene ID: (Human) 931
Molecular Function: receptor
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