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CD19/B4/CVID3  Protein, Antibody, ELISA Kit, cDNA Clone

Description: Active  
Expression host: Human Cells  
11880-H08H-50
11880-H08H-20
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20 µg 
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Description: Active  
Expression host: Human Cells  
50510-M08H-50
50510-M08H-20
50510-M08H-10
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20 µg 
10 µg 
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Expression host: Human Cells  
90051-C02H-20
90051-C02H-100
20 µg 
100 µg 
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CD19/B4/CVID3 Related Area

CD19/B4/CVID3 Related Pathways

    CD19/B4/CVID3 Related Protein, Antibody, cDNA Gene, and ELISA Kits

    CD19/B4/CVID3 Related Protein, Antibody, cDNA Gene, and ELISA Kits

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    CD19/B4/CVID3 Summary & Protein Information

    CD19/B4/CVID3 Background

    Subunit structure: Forms a complex with CD21, CD81 and CD225 in the membrane of mature B-cells. Interacts with VAV. Interacts with GRB2 and SOS when phosphorylated on Tyr-348 and/or Tyr-378. Interacts with PLCG2 when phosphorylated on Tyr-409. Interacts with LYN. {ECO:0000269|PubMed:10706702, ECO:0000269|PubMed:7687428}.
    Subcellular location: Membrane; Single-pass type I membrane protein.
    Post-translational: Phosphorylated on serine and threonine upon DNA damage, probably by ATM or ATR. Phosphorylated on tyrosine following B-cell activation. Phosphorylated on tyrosine residues by LYN. {ECO:0000269|PubMed:10706702, ECO:0000269|PubMed:7687428, ECO:0000269|PubMed:7687539}.
    Involvement in disease: DISEASE: Immunodeficiency, common variable, 3 (CVID3) [MIM:613493]: 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. {ECO:0000269|PubMed:16672701}. Note=The disease is caused by mutations affecting the gene represented in this entry.
    Sequence similarity: Contains 2 Ig-like C2-type (immunoglobulin-like) domains. {ECO:0000305}.
    General information above from UniProt

    The cluster of differentiation (CD) system is commonly used as cell markers in immunophynotyping. Different kinds of cells in the immune system can be identified through the surface CD molecules which associating with the immune function of the cell. There are more than 320 CD unique clusters and subclusters have been identified. Some of the CD molecules serve as receptors or ligands important to the cell through initiating a signal cascade which then alter the behavior of the cell. Some CD proteins do not take part in cell signal process but have other functions such as cell adhesion. Cluster of differentiation 19 (CD19) is a member of CD system. CD19 is a cell surface molecule that assembles with the antigen receptor of B-cells. This results in a descent in threshold for antigen receptor-dependent stimulation. A simplified view holds that the ability of B-cells to respond to the various antigens in a specific and sensitive manner is achieved in the presence of low-affinity antigen receptors. CD19 primarily acts as a B-cell coreceptor in conjunction with CD21 and CD81. The formation of the receptor complex is induced by antigen and CD19, induced by exogenous antigen, has been found cytoplasmic tail phosphorylated and bind to sIg.

    CD19/B4/CVID3 Alternative Name

    B4,CVID3, [homo-sapiens]
    B4,CD19,MGC12802, [human]
    AW495831,Cd19, [mouse]
    AW495831, [mus-musculus]

    CD19/B4/CVID3 Related Studies

  • Zola H, et al. (2007) CD molecules 2006-human cell differentiation molecules. J Immunol Methods. 318 (1-2): 1-5.
  • Ho IC, et al. (2009) GATA3 and the T-cell lineage: essential functions before and after T-helper-2-cell differentiation. Nat Rev Immunol. 9 (2): 125-35.
  • Matesanz-Isabel J, et al. (2011) New B-cell CD molecules. Immunology Letters.134 (2): 104-12.
  • Carter RH, et al. (1992) CD19: lowering the threshold for antigen receptor stimulation of B lymphocytes. Science. 256 (5053): 105-7.
  • Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"