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Btk Antibody #3532

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Inquiry Info. # 3532

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    Product Specifications

    REACTIVITY H M
    SENSITIVITY Endogenous
    MW (kDa) 77
    SOURCE Rabbit
    Application Key:
    • WB-Western Blotting 
    Species Cross-Reactivity Key:
    • H-Human 
    • M-Mouse 

    Product Information

    Product Usage Information

    Application Dilution
    Western Blotting 1:1000

    Storage

    Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA and 50% glycerol. Store at –20°C. Do not aliquot the antibody.

    Protocol

    Specificity / Sensitivity

    Btk Antibody detects endogenous levels of Btk. This antibody does not cross-react with other unrelated proteins.

    Species Reactivity:

    Human, Mouse

    Source / Purification

    Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Tyr223 of human Btk. Antibodies are purified by protein A and peptide-affinity chromatography.

    Background

    Bruton's tyrosine kinase (Btk) is a member of the Btk/Tec family of cytoplasmic tyrosine kinases. Like other Btk family members, it contains a pleckstrin homology (PH) domain and Src homology SH3 and SH2 domains. Btk plays an important role in B cell development (1,2). Activation of B cells by various ligands is accompanied by Btk membrane translocation mediated by its PH domain binding to phosphatidylinositol-3,4,5-trisphosphate (3-5). The membrane-localized Btk is active and associated with transient phosphorylation of two tyrosine residues, Tyr551 and Tyr223. Tyr551 in the activation loop is transphosphorylated by the Src family tyrosine kinases, leading to autophosphorylation at Tyr223 within the SH3 domain, which is necessary for full activation (6,7). The activation of Btk is negatively regulated by PKCβ through phosphorylation of Btk at Ser180, which results in reduced membrane recruitment, transphosphorylation, and subsequent activation (8). The PKC inhibitory signal is likely to be a key determinant of the B cell receptor signaling threshold to maintain optimal Btk activity (8).

    Alternate Names

    Agammaglobulinaemia tyrosine kinase; Agammaglobulinemia tyrosine kinase; AGMX1; AT; ATK; B-cell progenitor kinase; BPK; Bruton agammaglobulinemia tyrosine kinase; Bruton tyrosine kinase; Bruton's tyrosine kinase; BTK; dominant-negative kinase-deficient Brutons tyrosine kinase; IGHD3; IMD1; MGC126261; MGC126262; PSCTK1; truncated Bruton agammaglobulinemia tyrosine kinase; Tyrosine-protein kinase BTK; XLA

    For Research Use Only. Not for Use in Diagnostic Procedures.
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