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Phospho-Btk (Tyr223) Antibody
SPA-01154
| Size | Price |
| 25 µg | Online Inquiry |
| 100 µg | Online Inquiry |
| More Options | Online Inquiry |
| Target Information | |
|---|---|
| Target Name | Btk |
| Gene Abbr. | BTK |
| Gene ID | 695 |
| Full Name | Bruton tyrosine kinase |
| Alias | AGMX1, AT, ATK, BPK, IGHD3 |
| Introduction | 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. 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. 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. 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. The PKC inhibitory signal is likely to be a key determinant of the B cell receptor signaling threshold to maintain optimal Btk activity. |
| Product Details | |
|---|---|
| Host | Rabbit |
| Clonality | Monoclonal |
| Clone No. | D1D2Z |
| Immunogen | Synthetic phosphopeptide corresponding to residues surrounding Tyr223 of human Btk protein. |
| Source/Purification | Antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Tyr223 of human Btk protein. |
| Usage | |
|---|---|
| Application | WB, IP |
| Dilutions | Western Blot (1:1000); Immunoprecipitation (1:100) |
| MW(KDa) | 78 |
| Reactivity | Human, Mouse |
| Sensitivity | Endogenous |
| Specificity | This antibody recognizes endogenous levels of Btk protein only when phosphorylated at Tyr223. The antibody detects a 26 kDa protein of unknown identity that is not sensitive to treatment with anti-IgM or Ibrutinib. |
| Storage & Handling | |
|---|---|
| Storage Buffer | Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/mL BSA, 50% glycerol and less than 0.02% sodium azide. |
| Preservative | Less than 0.02% Sodium Azide |
| Storage Temp. | Store at -20 °C. |
| Handling | Do not aliquot the antibody. |
For research use only. Not intended for any clinical use. No products from CD BioSciences may be resold, modified for resale or used to manufacture commercial products without prior written approval from CD BioSciences.