Invitrogen™ CD20 Monoclonal Antibody (SP32)

Rabbit Monoclonal Antibody

Catalog Number	Mfr. No.	Quantity
PIMA139416	Invitrogen™ MA139416	1 mL
PIMA516334	Invitrogen™ MA516334	500 μL

Description

Heat-mediated antigen retrieval is recommended prior to staining, using a 10mM citrate buffer, pH 6.0, for 10 minutes followed by cooling at room temperature for 20 min. Following antigen retrieval, incubate samples with primary antibody for 30 min at room temperature. A suggested positive control is tonsil or B cell lymphoma.

CD20 is a non-glycosylated surface phosphoprotein that has a molecular weight range of 33-37 kDa depending on the degree of phosphorylation. CD20 is expressed on mature and most malignant B cells, in a subpopulation of T lymphocytes and follicular dendritic cells. CD20 expression on B cells is synchronous with the expression of surface IgM and it regulates transmembrane calcium conductance, cell cycle progression and B-cell proliferation. CD20 is also 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 monoclonal antibody treatment. Diseases associated with CD20 dysfunction include Ms4a1-related common variable immune deficiency.

Specifications

• Antigen: CD20
• Concentration: Conc. not determined
• Applications: Flow Cytometry, Immunohistochemistry (Paraffin), Western Blot, Immunocytochemistry
• Conjugate: Unconjugated
• Host Species: Rabbit
• Regulatory Status: RUO
• Formulation: PBS with 1% BSA and 0.1% sodium azide; pH 7.6
• Gene Accession No.: P11836, P19437
• Gene ID (Entrez): 12482, 931
• Immunogen: Synthetic peptide from C-terminus of human CD20 protein.
• Product Type: Antibody

• Clone: SP32
• Content And Storage: -20°C, Avoid Freeze/Thaw Cycles
• Classification: Monoclonal
• Form: Liquid
• Isotype: IgG
• Target Species: Human, Mouse
• Gene: Ms4a1
• Gene Alias: AA960661; APY; ATOPY; B1; B-cell differentiation antigen Ly-44; B-lymphocyte antigen CD20; B-lymphocyte cell-surface antigen B1; B-lymphocyte surface antigen B1; Bp35; Cd20; CD20 antigen; CD20 cell surface protein; CD20 receptor; CVID5; EGK_06167; Fc epsilon receptor I beta chain; Fc Fragment of IgE high affinity I receptor for beta polypeptide; FCER1B; High affinity immunoglobulin epsilon receptor subunit beta; IgE Fc receptor subunit beta; IGEL; IGER; IGHER; LEU16; LEU-16; Leukocyte surface antigen Leu-16; Ly44; Ly-44; Lymphocyte antigen 44; membrane spanning 4-domains A1; membrane-spanning 4-domains subfamily A member 1; membrane-spanning 4-domains, subfamily A, member 1; membrane-spanning 4-domains, subfamily A, member 2; MGC3969; MS4A1; MS4A2; S7
• Gene Symbols: Ms4a1
• Primary or Secondary: Primary
• Purification Method: Protein A/G