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CD20, Alexa Fluor 488, clone: L26, eBioscience™

Mouse Monoclonal Antibody

Manufacturer:  Life Technologies LS53020282

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Catalog No. 501124587



Description

Description

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.

It has been reported that the L26 antibody when used without antigen retrieval will detect a subpopulationof CD20-positive cells. The L26 antibody can be used with high pH antigen retrieval, although the quality of the staining and cell morphology is not optimal. This product has been optimized for use in immunohistochemistry. We do not recommend its use in flow cytometry. For flow cytometry applications, please refer to clone 2H7, cat. 11-0209. Excitation: 488 nm; Emission: 519 nm; Laser: Blue Laser. Filtration: 0.2 μm post-manufacturing filtered. CD20 is a non-glycosylated surface phosphoprotein that has a molecular weight range of 33-37 kDa depending on the degree of phosphorylation. CD20 is expressed on mature and most maligt B cells, in a subpopulation of T lymphocytes and follicular dendritic cells. CD20 expression on B cells is synchronous with the expression of surface IgM and it regulates transmembrane calcium conductance, cell cycle progression and B-cell proliferation. CD20 is also 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 maligcies, but does not become internalized or shed from the plasma membrane following monoclonal antibody treatment. Diseases associated with CD20 dysfunction include Ms4a1-related common variable immune deficiency.
Specifications

Specifications

CD20
Monoclonal
0.5 mg/mL
PBS with 0.1% gelatin and 0.09% sodium azide; pH 7.2
P11836
B1, Bp35, CD20, LEU-16, MGC3969, MS4A1
Mouse
Affinity chromatography
RUO
Antibody
Monoclonal
Cynomolgus Monkey, Human, Rhesus Monkey
Immunocytochemistry, Immunofluorescence, Immunohistochemistry (Frozen), Immunohistochemistry (Paraffin)
L26
Alexa Fluor® 488
MS4A1
Liquid
MS4A1
IgG2a, kappa
100 μg
4° C, store in dark, DO NOT FREEZE!
Primary
102118491, 696843, 931
Documents

For Research Use Only.