33 kDa (Zhou, 1995)

CD20 is a transmembrane, non-glycosylated protein expressed on B-cell precursors and mature B cells, but is lost following differentiation into plasma cells (Tedder, 1994). In resting B cells, CD20 appears in a 33 kDa non-phosphorylated form. After mitogen stimulation, CD20 becomes heavily phosphorylated (35-37 kDa isoforms), and it is a dominant phosphoprotein in activated B cells and B-cell lines (Zhou, 1995). The long N- and C-terminal ends of the protein are located on the cytoplasmic side of the membrane and only a minor portion of the protein is exposed on the cell surface (Tedder, 1994). Antibodies reacting with CD20 cytoplasmic epitopes are designated CD20cy (Zhou, 1995). It is suggested that CD20 plays a direct role in regulating the transmembrane conductive Ca 2+ flux of B cells which indicates a possible function for CD20 as a regulator of proliferation and differentiation (Tedder, 1994).

Research Category
Inflammation & Immunology

Research Sub Category
Immunoglobulins & Immunology

This Milli-Mark Anti-CD20 -FITC Antibody, clone B-Ly1 is validated for use in FC for the detection of CD20.

Antibody recognizes Human CD20 antigen.

Protein A purified

Purified Mouse monoclonal IgG1k conjugated to PE in 0.05M Tris-HCl buffer with 1% BSA, Sodium Azide at 0.097% at pH 7.2

Maintain refrigerated at 2-8 °C protected from light in undiluted aliquots for up to 6 months from date of receipt.

Control
Human Lymphocytes

Evaluated by flow cytometry using human lymphocytes.

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.