BTK 蛋白, Human (Biotinylated, sf9, His, Avi)

The BTK protein is a key non-receptor tyrosine kinase that is essential for B lymphocyte development and signaling. After BCR activation, BTK initiates a cascade reaction, phosphorylates PLCG2 and activates downstream pathways, affecting calcium mobilization and PKC activation. BTK Protein, Human (Biotinylated, sf9, His, Avi) is the recombinant human-derived BTK, expressed by Sf9 insect cells , with His, Avi labeled tag. ,

BTK 蛋白是一种非受体酪氨酸激酶，对于 B 淋巴细胞的发育、分化和信号传导是不可或缺的。抗原与 B 细胞抗原受体 (BCR) 结合后，BTK 会触发信号级联，导致 B 细胞激活、磷酸化 PLCG2 并启动涉及钙动员和蛋白激酶 C (PKC) 激活的下游途径。BTK 作为多种信号蛋白的平台，参与细胞因子受体信号通路，在先天性和适应性免疫中至关重要，特别是在 Toll 样受体 (TLR) 通路中。它在调节脾 B 细胞中的 TLR9 激活中发挥着关键作用，并诱导 NF-kappa-B 的活性，从而有助于众多基因的转录调节。此外，BTK 还能激活 NLRP3 炎症小体组装、磷酸化转录因子 GTF2I，并参与细胞凋亡调节，凸显其在免疫反应和细胞过程中的多方面功能。

The activity was measured by off-chip mobility shift assay(MSA). The enzyme was incubated with fluorecence-labeled substrate and Mg(or Mn)/ATP. The phosphorylated and unphosphorylated substrates were separated and detected by MSA device. The Km of BTK for its substrate EGFRtide is 137 μM.

Human

Sf9 insect cells

His;Avi

Q06187-1 (A2-S659, C481S)

695

80.4 kDa

Greater than 90% as determined by reducing SDS-PAGE.

溶液

Supplied as a 0.2 μm filtered solution of 50 mM Tris-HCl, 150 mM NaCl, 10% glycerol, 1 mM DTT, pH 7.5 or 30 mM HEPES (pH 7.5), 150 mM NaCl, 1 mM DTT, 10% glycerol or 50 mM HEPES (pH 7.5), 500 mM NaCl, 20% glycerol, 1 mM DTT.

<1 EU/μg, determined by LAL method.

Please use rapid thawing with running water to thaw the protein.

Stored at -80°C for 1 year. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping with dry ice.