Human ErbB3 / Her3 Protein, His Tag (MALS verified)
分子别名(Synonym)
ERBB3,HER3,LCCS2,MDA-BF-1,MGC88033,c-erbB3,erbB3-S,p180-ErbB3,p45-sErbB3,p85-sErbB3
表达区间及表达系统(Source)
Human ErbB3, His Tag (ER3-H5223) is expressed from human 293 cells (HEK293). It contains AA Ser 20 - Thr 643 (Accession # P21860-1).
Predicted N-terminus: Ser 20
蛋白结构(Molecular Characterization)

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 70.5 kDa. The protein migrates as 70-80 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
内毒素(Endotoxin)
Less than 0.1 EU per μg by the LAL method / rFC method.
纯度(Purity)
>95% as determined by SDS-PAGE.
>90% as determined by SEC-MALS.
制剂(Formulation)
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法(Reconstitution)
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储(Storage)
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70°C for 3 months under sterile conditions after reconstitution.


背景介绍
ErbB3(亦称Her3,即人表皮生长因子受体3)是表皮生长因子受体(EGFR)家族中的受体酪氨酸激酶成员。这种膜结合糖蛋白虽具有神经调节蛋白结合结构域,但其激酶结构域不具备活性功能。因此它能结合配体,却无法通过蛋白质磷酸化介导细胞内信号转导。然而,ErbB3可与ErbB2或其他EGFR家族成员形成异源二聚体,由后者完成酪氨酸磷酸化过程,从而构建有功能的受体复合体并激活相关通路,最终引发细胞增殖或分化。该蛋白在前列腺癌、膀胱癌及乳腺癌等多种恶性肿瘤中均存在过表达现象。通过选择性剪接可产生不同亚型,其中缺乏跨膜区的分泌型异构体能调节膜结合型受体的活性。
关键字: ErbB3;ErbB3蛋白;ErbB3重组蛋白;ACRO;百普赛斯;
百普赛斯集团ACROBiosystems Group(股票代码:301080)是成立于2010年的跨国生物科技公司,是为全球生物医药、健康产业领域提供关键生物试剂产品及解决方案的行业平台型基石企业。2021年在创业板上市。百普赛斯集团业务遍布全球,横跨亚洲、北美洲、欧洲,在中国、美国、瑞士等12个城市设有办公室、研发中心及生产基地。目前累计服务客户超6000家,与全球Top 20医药企业均建立了长期、稳定的合作伙伴关系。集团旗下拥有品牌ACROBiosystems百普赛斯、bioSeedin柏思荟、Condense Capital垦拓资本和ACRODiagnostics百斯医学等。