|Application ||WB, IF, ICC, E|
|Other Accession||Q06187, 547759|
|Calculated MW||Predicted: 76 kDa |
Observed: 79 kDa
|Application Notes||BTK antibody can be used for the detection of BTK by Western blot at 0.5 to 2 µg/mL. Antibody can also be used for immunocytochemistry starting at 10 µg/mL. For immunofluorescence start at 10 µg/mL.|
|Other Names||BTK Antibody: AT, ATK, BPK, XLA, IMD1, AGMX1, PSCTK1, Tyrosine-protein kinase BTK, Agammaglobulinemia tyrosine kinase, Bruton agammaglobulinemia tyrosine kinase|
|Target/Specificity||BTK; Multiple isoforms of BTK are known to exist.|
|Reconstitution & Storage||BTK antibody can be stored at 4℃ for three months and -20℃, stable for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.|
|Precautions||BTK Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|Synonyms||AGMX1, ATK, BPK|
|Function||Non-receptor tyrosine kinase indispensable for B lymphocyte development, differentiation and signaling. Binding of antigen to the B-cell antigen receptor (BCR) triggers signaling that ultimately leads to B-cell activation. After BCR engagement and activation at the plasma membrane, phosphorylates PLCG2 at several sites, igniting the downstream signaling pathway through calcium mobilization, followed by activation of the protein kinase C (PKC) family members. PLCG2 phosphorylation is performed in close cooperation with the adapter protein B-cell linker protein BLNK. BTK acts as a platform to bring together a diverse array of signaling proteins and is implicated in cytokine receptor signaling pathways. Plays an important role in the function of immune cells of innate as well as adaptive immunity, as a component of the Toll-like receptors (TLR) pathway. The TLR pathway acts as a primary surveillance system for the detection of pathogens and are crucial to the activation of host defense. Especially, is a critical molecule in regulating TLR9 activation in splenic B-cells. Within the TLR pathway, induces tyrosine phosphorylation of TIRAP which leads to TIRAP degradation. BTK plays also a critical role in transcription regulation. Induces the activity of NF-kappa-B, which is involved in regulating the expression of hundreds of genes. BTK is involved on the signaling pathway linking TLR8 and TLR9 to NF-kappa-B. Transiently phosphorylates transcription factor GTF2I on tyrosine residues in response to BCR. GTF2I then translocates to the nucleus to bind regulatory enhancer elements to modulate gene expression. ARID3A and NFAT are other transcriptional target of BTK. BTK is required for the formation of functional ARID3A DNA-binding complexes. There is however no evidence that BTK itself binds directly to DNA. BTK has a dual role in the regulation of apoptosis.|
|Cellular Location||Cytoplasm. Cell membrane; Peripheral membrane protein. Nucleus. Note=In steady state, BTK is predominantly cytosolic. Following B-cell receptor (BCR) engagement by antigen, translocates to the plasma membrane through its PH domain. Plasma membrane localization is a critical step in the activation of BTK. A fraction of BTK also shuttles between the nucleus and the cytoplasm, and nuclear export is mediated by the nuclear export receptor CRM1|
|Tissue Location||Predominantly expressed in B-lymphocytes.|
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Provided below are standard protocols that you may find useful for product applications.
BTK Antibody: Bruton's tyrosine kinase (BTK) was initially identified as a member of the src family for protein-tyrosine kinases that was involved in X-linked agamma-globulinaemia, and has since been shown to involved in a number of signaling pathways in hemapoietic lineage. It has recently been shown to interact with members of the toll-like receptor (TLR) family such as TLR4, 6, 8, and 9. The TLRs are critical molecules in both the innate and adaptive immunity and can recognize diverse microbial pathogens. BTK has also been shown to interact with key proteins involved in TLR4 signal transduction such as MyD88, TIRAP, and IRAK, but not TRAF-6, suggesting that BTK is involved in lipopolysaccharide signal transduction.
Vetrie D, Vorechovsky I, Sideras P, et al. The gene involved in X-linked aγglobulinaemia is a member of the src family of tyrosine kinases. Nature 1993; 361:226-33.
Kawakami Y, Kitaura J, Hata D, et al. Functions of Bruton's tyrosine kinase in mast and B cells. J. Leukoc. Biol. 1999; 65(3):286-90.
Jefferies CA, Doyla S, Brunner C, et al. Bruton’s tyrosine kinase is a Toll/Interleukin-1 receptor domain-binding protein that participates in nuclear factor kB activation by Toll-like receptor 4. J. Biol. Chem. 2003; 278:26258-26264.
Akira S and Takeda K. Toll-like receptor Signalling. Nat. Rev. Immunol. 2004; 4:499-511.
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