CD20, PE, clone: QCH6A7, eBioscience™

Rat Monoclonal Antibody

Brand:  Affymetrix eBioscience 12-0203-80

Product Code. 15566726

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.

Description: The monoclonal antibody QCH6A7 reacts with mouse CD20. CD20 is a B cell specific, 32-kDa membrane protein that is expressed on late pro-B cells through memory B cells in the B cell lineage. CD20 is not found on hematopoietic stem cells, early pro-B cells or later mature plasma cells. CD20 is involved in intracellular calcium regulation and plays a role in B cell proliferation. CD20 is intially expressed after the induction of CD19 during development and is coexpressed with IgM during the pre-B to immature B cell transition in bone marrow. Expression of CD20 increases during maturation with almost all mature B cells expressing some level of CD20. Unlike other B cell antigens, CD20 is not shed or internalized upon antibody binding. Monoclonal antibodies against the CD20 antigen may be used to deplete B cells and CD20 has proven to be an effective immunotheraputic target in B cell lymphomas and several autoimmune diseases including rheumatoid arthritis and type I diabetes. CD20 consists of 4 transmembrane domains and a 44 amino acid extracellular domain which contains the QCH6A7 epitope.Staining with clone QCH6A7 provides significantly improved staining intensity compared to clone AISB12 in flow cytometric assays.Applications Reported: This QCH6A7 antibody has been reported for use in flow cytometric analysis.Applications Tested: This QCH6A7 antibody has been tested by flow cytometric analysis of mouse bone marrow cells and mouse splenocytes. This can be used at less than or equal to 1 μg per test. A test is defined as the amount (μg) of antibody that will stain a cell sample in a final volume of 100 μL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.Excitation: 488-561 nm; Emission: 578 nm; Laser: Blue Laser, Green Laser, Yellow-Green Laser.Filtration: 0.2μm post-manufacturing filtered.

Specifications

• Antigen: CD20
• Classification: Monoclonal
• Concentration: 0.2mg/mL
• Formulation: PBS with 0.1% gelatin and 0.09% sodium azide; pH 7.2
• Gene Accession No.: P19437
• Gene Alias: B1, Bp35, CD20, LEU-16, MGC3969, MS4A1
• Host Species: Rat
• Purification Method: Affinity chromatography
• Regulatory Status: RUO
• Type: Antibody
• Monoclonal or Polyclonal: Monoclonal
• Target Species: Murine

• Applications: Flow Cytometry
• Clone: QCH6A7
• Conjugate: PE
• Gene: Ms4a1
• Format: Liquid
• Gene Symbols: Ms4a1
• Isotype: IgG2a, kappa, kappa
• Quantity: 25μg
• Storage Requirements: Store at 2-8°C. Do not freeze. Light-sensitive material.
• Primary or Secondary: Primary
• Gene ID (Entrez): 12482

For Research Use Only.