Mouse CD20 Monoclonal Antibody | anti-CD20 antibody

Anti-Hu CD20 APC

Cat. Num. AAA1800129

• Gene Names: MS4A1; B1; S7; Bp35; CD20; CVID5; MS4A2; LEU-16
• Reactivity: Human, Non-human primates
• Applications: Flow Cytometry, Functional Assay
• Purity: The purified antibody is conjugated with allophycocyanin (APC) under optimum conditions. The conjugate is purified by size-exclusion chromatography.
• Synonyms: CD20; Monoclonal Antibody; Anti-Hu CD20 APC; MS4A1; B1; S7; MS4A; Bp35; CVID5; LEU-16; anti-CD20 antibody

• Host: Mouse
• Reactivity: Human, Non-human primates
• Clonality: Monoclonal
• Isotype: IgG2b kappa
• Clone Number: 2H7
• Specificity: The mouse monoclonal antibody 2H7 recognizes an extracellular epitope on CD20 (B1, Bp35), a 33-37 kDa non-glycosylated membrane receptor with four transmembrane domains, expressed on pre-B lymphocytes, resting and activated B cells (not plasma cells), follicular dendritic cells, and at low levels on peripheral blood T lymphocytes.
• Purity/Purification: The purified antibody is conjugated with allophycocyanin (APC) under optimum conditions. The conjugate is purified by size-exclusion chromatography.
• Form/Format: Stabilizing phosphate buffered saline (PBS) solution containing 15 mM sodium azide
• Sequence Length: 297

• Applicable Applications for anti-CD20 antibody: Flow Cytometry (FC/FACS)
• Application Notes: FC/FACS: QC tested
• Immunogen: Human tonsillar B cells
• Conjugation: APC
• Preparation and Storage: Store in the dark at 2-8 degree C. Do not freeze. Avoid prolonged exposure to light.

Flow Cytometry (FC/FACS)

(Flow cytometry analysis (Surface staining) of human peripheral blood with anti-CD20 (2H7) APC.)

Related Product Information for anti-CD20 antibody

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.

NCBI and Uniprot Product Information

• NCBI GI #: 115968
• NCBI GeneID: 931
• UniProt Accession #: P11836
• NCBI Official Full Name: B-lymphocyte antigen CD20
• NCBI Official Synonym Full Names: membrane spanning 4-domains A1
• NCBI Official Symbol: MS4A1
• NCBI Official Synonym Symbols: B1; S7; Bp35; CD20; CVID5; MS4A2; LEU-16
• NCBI Protein Information: B-lymphocyte antigen CD20
• UniProt Protein Name: B-lymphocyte antigen CD20
• Protein Family: CD209 antigen
• UniProt Gene Name: MS4A1
• UniProt Synonym Gene Names: CD20
• UniProt Entry Name: CD20_HUMAN

NCBI Description

This gene encodes a member of the membrane-spanning 4A gene family. Members of this nascent protein family are characterized by common structural features and similar intron/exon splice boundaries and display unique expression patterns among hematopoietic cells and nonlymphoid tissues. This gene encodes a B-lymphocyte surface molecule which plays a role in the development and differentiation of B-cells into plasma cells. This family member is localized to 11q12, among a cluster of family members. Alternative splicing of this gene results in two transcript variants which encode the same protein. [provided by RefSeq, Jul 2008]

Uniprot Description

MS4A1: This protein may be involved in the regulation of B-cell activation and proliferation. Defects in MS4A1 are the cause of immunodeficiency common variable type 5 (CVID5); also called antibody deficiency due to CD20 defect. CVID5 is a primary immunodeficiency characterized by antibody deficiency, hypogammaglobulinemia, recurrent bacterial infections and an inability to mount an antibody response to antigen. The defect results from a failure of B-cell differentiation and impaired secretion of immunoglobulins; the numbers of circulating B-cells is usually in the normal range, but can be low. Belongs to the MS4A family.

Protein type: Membrane protein, integral; Cell surface; Membrane protein, multi-pass

Chromosomal Location of Human Ortholog: 11q12

Cellular Component: extracellular space; integral to plasma membrane; external side of plasma membrane

Molecular Function: epidermal growth factor receptor binding

Biological Process: B cell proliferation; humoral immune response

Disease: Immunodeficiency, Common Variable, 5