CD20 Antibody (MEM-269)

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Product Details

Summary
Product Discontinued
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Order Details


    • Catalog Number
      NB110-58725
    • Availability
      Product Discontinued

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CD20 Antibody (MEM-269) Summary

Immunogen
RAMOS human lymphoma cell line
Specificity
The antibody MEM-269 reacts with CD20 (Bp35), a 33-37 kDa non-glycosylated membrane receptor with four transmembrane domains, expressed on B lymphocytes (it is lost on plasma cells), follicular dendritic cells, and at low levels on peripheral blood T lymphocytes.
Isotype
IgM
Clonality
Monoclonal
Host
Mouse
Gene
MS4A1
Purity
Ammonium sulfate precipitation
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Applications/Dilutions

Dilutions
  • Flow Cytometry 4 ug/ml
  • Immunohistochemistry 1:10-1:500
  • Immunohistochemistry-Paraffin 1:200
Positive Control
CD20 Lysate (NBL1-13311)

Packaging, Storage & Formulations

Storage
Store at 4C. Do not freeze.
Buffer
TBS (approx. pH 8.0)
Preservative
15mM Sodium Azide
Concentration
1.0 mg/ml
Purity
Ammonium sulfate precipitation

Alternate Names for CD20 Antibody (MEM-269)

  • B1
  • B-lymphocyte antigen CD20
  • B-lymphocyte cell-surface antigen B1
  • B-lymphocyte surface antigen B1
  • Bp35
  • Bp35MGC3969
  • CD20 antigen
  • CD20 receptor
  • CD20
  • CD20S7
  • CVID5
  • LEU-16
  • Leukocyte surface antigen Leu-16
  • Ly-44
  • Membrane-spanning 4-domains subfamily A member 1
  • membrane-spanning 4-domains, subfamily A, member 1
  • MS4A1
  • MS4A2
  • S7

Background

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.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Positive Control Lysate(s)

Secondary Antibodies

 

Isotype Controls

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Blogs on CD20.

CD20 (Cluster of differentiation 20, Membrane-spanning 4-domains subfamily A member 1 (MS4A1), CVID5, B-lymphocyte surface antigen B1)
CD20 is a human B-lymphocyte surface molecule that spans the membrane four times and is expressed on both normal and malignant cells. The CD20 antigen displays a unique expression pattern among hematopoietic cells - it is present on human pre B-ly...  Read full blog post.

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Bioinformatics

Gene Symbol MS4A1
Entrez