Human B7-1 / CD80 Protein, His Tag (MALS verified)
分子别名(Synonym)
CD80, B7, B7-1, B7.1, BB1, CD28LG, CD28LG1, LAB7
表达区间及表达系统(Source)
Human B7-1, His Tag (B71-H5228) is expressed from human 293 cells (HEK293). It contains AA Val 35 - Asn 242 (Accession # P33681-1).
Predicted N-terminus: Val 35
蛋白结构(Molecular Characterization)

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 25.8 kDa. The protein migrates as 40-60 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to different glycosylation.
内毒素(Endotoxin)
Less than 1.0 EU per μg by the LAL method / rFC method.
纯度(Purity)
>90% 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
B7-1与B7-2及其受体CD28和CTLA-4共同构成调节T细胞和B细胞应答的核心共刺激通路之一。尽管CTLA-4与CD28均可结合相同配体,但CTLA-4与B7-1/B7-2的结合亲和力比CD28高20-100倍,并参与免疫应答的下调过程。
B淋巴细胞激活抗原B7-1(简称B7)亦称为分化簇80(CD80),是细胞表面免疫球蛋白超家族成员,表达于活化B细胞、活化T细胞、巨噬细胞及树突状细胞。该蛋白是T细胞表面两种不同蛋白的配体:CD28(参与自身调节和细胞间联结)与CTLA-4(参与调控衰减和细胞解离)。CD80与CD86协同作用激活T细胞,还通过激活巨噬细胞中的NF-κB信号通路参与诱导先天性免疫应答。因此CD80被视为自身免疫性疾病和多种癌症的重要治疗靶点。
关键字: B7-1;B7-1蛋白;B7-1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。