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>   home   >   Products   >   Primary Antibodies   >   Signal Transduction   >   CD20 Antibody [Clone B9E9]   

CD20 Antibody [Clone B9E9]

Purified Mouse Monoclonal Antibody

Product Information
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
Primary Accession P11836
Reactivity Human
Host Mouse
Clonality Monoclonal
Isotype IgG2a, kappa
Clone Names B9E9
Calculated MW 33-37kDa
Additional Information
Gene ID 931
Other Names B-lymphocyte antigen CD20, B-lymphocyte surface antigen B1, Bp35, Leukocyte surface antigen Leu-16, Membrane-spanning 4-domains subfamily A member 1, CD20, MS4A1, CD20
Target/Specificity Lymphoblastoid cell line Daudi
Application Note Flow Cytometry 2.5ul (0.5ug) per test per one million cells.
Format 0.5 ml at 200ug/ml; Conjugated to PE
StorageStore at 2 to 8°C.Antibody is stable for 24 months.
PrecautionsCD20 Antibody [Clone B9E9] is for research use only and not for use in diagnostic or therapeutic procedures.
Protein Information
Name MS4A1
Synonyms CD20
Function This protein may be involved in the regulation of B-cell activation and proliferation.
Cellular Location Cell membrane; Multi-pass membrane protein. Cell membrane; Lipid-anchor
Tissue Location Expressed on B-cells.
Research Areas
Citations (0)

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Recognizes a protein of 33-37kDa, identified as CD20 (Workshop V; Code CD20.12). B9E9 recognizes extracellular domain of CD20. The epitope is similar to or identical to that recognized by other CD20 antibodies including Leu-16 and B1. This MAb can be used for immunophenotyping of leukemia and malignant cells, B lymphocyte detection in peripheral blood, B cell localization in tissues and B lymphocyte purification by immunosorbent methods. CD20 is a non-Ig differentiation antigen of B-cells and its expression is restricted to normal and neoplastic B-cells, being absent from all other leukocytes and tissues. CD20 is expressed by pre B-cells and persists during all stages of B-cell maturation but is lost upon terminal differentiation into plasma cells. Protein passes through the membrane 4 times with both ends in cytoplasm and exposes one short and one longer loop to the external environment. CD20 is not glycosylated in resting B cells and its cytoplasmic domains are differentially phosphorylated upon activation. It acts as a calcium channel involved in B-cell activation and cell cycle progression.


1. Schlossman S, et al. (eds). Leukocyte Typing V, Oxford University Press, Oxford, p511-515, 1995.
2. Tedder TF and Schlossman SF. Phosphorylation of the B1 (CD20) molecule by normal and malignant human B lymphocytes. J Biol Chem 1988, 263(20):10009-10015.
3. Bubien JK et al. Transfection of the CD20 cell surface molecule into ectopic cell types generates a Ca2+ conductance found constitutively in B lymphocytes. J Cell Biol 1993, 121(5):1121-1132.
4. Tedder TF and Engel P. CD20: a regulator of cell-cycle progression of B lymphocytes. Immunol Today 1994, 15(9):450-454.
5. Kanzaki M et al. Expression of calcium-permeable cation channel CD20 accelerates progression through the G1 phase in Balb/c 3T3 cells. J Biol Chem 1995, 270(22):13099-13104.

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$ 295.00
Cat# AH10077
(40 western blots)
Availability: 2-3 days
Bulk Size
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