Recombinant Human Fc gamma RIIA / CD32a (H167) Protein, CF (HEK293)

目录号:C0453

打印

Recombinant Human Fc gamma RIIA / CD32a (H167) Protein, CF (HEK293) is expressed from HEK293 cells with an His tag at the C-terminus.

生物描述

Accession
P12318
背景
人 Fcγ 受体分为三类:FcγRI(CD64)、FcγRII(CD32)以及 FcγRIII(CD16),每一类均可产生多种亚型。活化型受体自身含有辅助亚基,或与辅助亚基发生非共价结合;该辅助亚基的胞内结构域带有免疫受体酪氨酸活化基序(ITAM)。FcγRI 以高亲和力结合 IgG,在免疫应答早期发挥作用;而 FcγRII 和 FcγRIII 属于低亲和力受体,在免疫应答晚期识别多价抗原周围聚集形成复合物的 IgG。 人 CD32,又称低亲和力免疫球蛋白 γ Fc 段受体 II‑a(IgG Fc 受体 II‑a、FcγRIIA、FCGR2A 蛋白),表达于髓系、淋巴谱系细胞以及部分非造血来源细胞。CD32a(FcγRIIA)可结合携带 ITAM 的衔接亚基 FcRγ;配体结合后传递活化信号,启动炎症反应,包括细胞裂解、吞噬作用、脱颗粒以及细胞因子生成。共表达的抑制性受体(例如 FcγRIIB)可对上述应答进行调控,信号强弱取决于活化受体与抑制受体的表达比例。

使用信息

物种
Human
来源
HEK293-drived Human Fc gamma RIIA / CD32a (H167) Protein AA Ala 36 - Ile 218 (H167).
预测分子量
21 kDa
实际分子量
29-32 kDa, reducing conditions
纯度
>95% as determined by Bis-Tris PAGE.
内毒素
< 0.1 EU/ug by the LAL method
制剂
Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
复溶方法
开盖前先10,000-12,000 rpm 离心 30 s;向冻干粉中加入无菌PBS,用枪头轻轻吹打混匀,重悬浓度不低于 100 μg/mL;复溶之后分装放-80℃保存,避免反复冻融,如要长期储存,建议添加保护剂(如0.1% BSA、5% HSA、10% FBS等)
储存条件 (自收到货起)
For long-term storage, keep the product lyophilized at -20°C or below. Please avoid repeated freeze-thaw cycles. Stability:​ Lyophilized: 12 months (-20°C to -80°C) Reconstituted: 3 months at -80°C under sterile conditions.

Data

Quality Inspection Chart of Recombinant Human Fc gamma RIIA / CD32a (H167) Protein, CF (HEK293)

Recombinant Human Fc gamma RIIA / CD32a (H167) Protein, CF (HEK293)on SDS-PAGE under reducing (R) and non-reducing (NR) conditions. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.