CD20/MS4A1 蛋白, Human (Trx-His)

CD20/MS4A1 protein is a B lymphocyte membrane protein that plays a crucial regulatory role in cellular calcium influx, which is essential for the development, differentiation and activation of B lymphocytes. As part of a store-operated calcium (SOC) channel, it promotes calcium influx upon B cell receptor/BCR activation. CD20/MS4A1 Protein, Human (Trx-His) is the recombinant human-derived CD20/MS4A1 protein, expressed by E. coli , with N-Trx, N-6*His labeled tag.

CD20/MS4A1 蛋白是一种 B 淋巴细胞特异性膜蛋白，在调节细胞钙内流方面发挥着至关重要的作用，而钙内流对于 B 淋巴细胞的发育、分化和激活至关重要。它作为钙库操纵 (SOC) 通道的组成部分发挥作用，在 B 细胞受体/BCR 激活后促进钙流入。CD20/MS4A1 形成同源四聚体，有助于其结构组织和在钙信号传导中的功能作用。值得注意的是，它与细胞表面 IgM 的重链和轻链（BCR 的抗原结合成分）相互作用，突出了它在 B 细胞受体复合物中的参与，并强调了它在 B 细胞激活和免疫反应中的重要性。

Measured by its binding ability in a functional ELISA. Immobilized Human CD20, at 2μg/mL (100μL/well) can bind Anti-CD20 antibody. The ED₅₀ for this effect is 0.3564 μg/mL.

Human

E. coli

N-Trx;N-6*His

P11836-1 (I141-S188)

931  [NCBI]

IKISHFLKMESLNFIRAHTPYINIYNCEPANPSEKNSPSTQYCYSIQS

approximately 20.91 kDa

• 
  Greater than 95% as determined by reducing SDS-PAGE

无菌粉末.

Lyophilized from a 0.2 μm filtered solution of 50 mM HEPES, 150 mM NaCl, 1 mM EDTA, pH 8.0.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.